The Caverns

This article is about a recent addition to the game.

Important information may be missing, please consider contributing by updating this article.

The Caverns is a feature located in The Hole, it includes 2 main parts.
Firstly the Camp where your villagers are and second the Caverns, who are located in the hole.
All the Villagers(except (image)Polonai which you have at the start) are hidden in the caverns and must be rescued(clicked),
they can then be upgraded using  Opals which will give them xp overtime and level them up unlocking new features.

Camp

Place where the villagers are

Polonai, Explorer of the Hole

Unlocks Caverns

EXP Requirements

Level	Xp required	Level	Xp required	Level	Xp required
2	342	12	237.9 M	22	3.4 T
3	1,749	13	670.6 M	23	8.2 T
4	7,423	14	1.8 B	24	19.9 T
5	26,951	15	5 B	25	48.1 T
6	154 K	16	13.1 B	26	115.1 T
7	667.8 K	17	34 B	27	274.1 T
8	2.5 M	18	87.1 B	28	649.8 T
9	8.5 M	19	220.4 B	29	1.5 Qa
10	27 M	20	552.2 B	30	3.6 Qa
11	81.8 M	21	1.4 T

Kaipu, Engineer of Schematics

Create Schematics

All Schematics

level	Image	Name	Cost	Bonus
1
	image	Opal Dividends	6 Gravel	Each opal invested in a villager now gives them 125 EXP/hr, instead of 100 EXP/hr
	image	Better Buckets	8 Gravel	Increases the base fill rate of all Well Buckets from 10/hr to 15/hr
	image	Loadin' some 'Lode	12 Gravel	Gives +5 Bucket Fill Rate per Power of 10 Motherlode Ore mined
	image	Hiring the Hounds from Beyond	30 Gravel	Gives +10 B.F.R. per 100 hounds defeated in best runs of each class
2
	image	Cavern 'Porting	60 Gravel	All teleports to this map are free!
	image	Bar Expand-o-rama	100 Gravel	Adds the 'Expand Full Bars' toggle to the Well! When a bar is full of sediment, you lose half of the sediment, but permanently increase the max by 1.50x! Capped at 14
	image	2nd Bucket!	130 Gravel	Adds another bucket at the Well!
3
	image	DNA Rock Tumbler	461 Gravel	+60% chance to get an additional Grey Gene when trashing a pet for every Power of 10 Gravel you have
	image	Motherlode ~ Bucket Synergy	180 Gravel	1.10x fill rate per Motherlode Layer you've destroyed!
	image	Green Amplifier	180 Goldust	Adds a new Amplifier stone to interact with at the Dawg Den!
4
	image	Expander Extravaganza	350 Goldust	+20% Fill Rate per bar expansion across all sediment types!
	image	Even Better Buckets	2,028 Goldust	Increases the base fill rate of all Well Buckets from 15/hr to 20/hr
	image	The Story Changes Over Time...	600 Goldust	Bravery Swords get +1 minimum DMG and +10 maximum DMG per 6 HR of AFK time at the Bravery Monument!
5
	image	3rd Bucket!	850 Goldust	Adds another bucket at the Well!
	image	True Golden Edge	5,444 Goldust	+20% Damage for every Power of 10 Golddust you have
	image	Double Dinger Ringer	6,969 Mythril	Ringing the Bell now has a +30% chance of giving +2 LV to a bonus, instead of just +1 LV
	image	Pink Amplifier	3,250 Redstone	Adds a new Amplifier stone to interact with at the Dawg Den!
6
	image	Heavy Redstone Seasoning	14,615 Redstone	1.30x Cooking Speed bonus for every Power of 10 Redstone you have
	image	Motherlode Trickledown	18,707 Mythril	+15% All Skill Efficiency, and +10% All Skill EXP gain per Motherlode Layer you've destroyed!
	image	Loaded Harp	183 Crotchet Note	Adds +1 more string to the Harp
7
	image	Eee String	259 Crotchet Note	Permanently unlocks a new String Type for the Harp!
	image	UBER Bar Expand-o-rama-hala	28,000 Gravel	Allow for UBER Full Bar Expansion, which means you can expand Well Bars beyond the previous limit of 14 times.
	image	4th Bucket!	82,275 Redstone	Adds yet another bucket at the Well!
8
	image	Yellow Amplifier	105.3 K Gravel	Adds a new Amplifier stone to interact with at the Dawg Den!
	image	Tune of Artifaction	1,351 Natural Note	+10% Artifact Find Chance for every Power of 10 Natural Notes you have
	image	Improvement Stackin'	2,455 Bass Note	For every 25 LVs across all Improvement Methods upgrades at the Bell, all your Improvement Method bonuses are 1.10x higher!
9
	image	RNG Oxidizing Layer	282.7 K Cobaltine	When you Clean the Bell and FAIL to get a new Improvement Method, the success chance for next time goes up by 1.25x. This happens every fail, and resets when you finally succeed!
	image	Stringy Effect	463.2 K Mythril	Strings give +15% more. More what, you ask? More everything! They give more String EXP, more notes, higher chance for opal... so yea, MORE!
	image	Packed Harp	8,990 Natural Note	Adds +1 more string to the Harp
10
	image	Domino Effect	758.9 K Cobaltine	Strings give +20% more per string plucked during a strum
	image	Fractalfly ~ Harp Synergy	23,189 Treble Note	Boosts your Harp Note production by 1.10x per Undying Hive Layer you've destroyed!
	image	Five Nights at Bucket	1.6 M Redstone	Adds one more bucket at the Well!
	image	Eff String	46,732 Bass Note	Permanently unlocks a new String Type for the Harp!
11
	image	Cyan Amplifier	3.3 M Mythril	Adds a new Amplifier stone to interact with at the Dawg Den!
	image	Triple Tap Tinkle	4.3 M Freezium	Ringing the Bell now has another +30% chance of giving +2 LV to a bonus instead of just +1 LV. Also, there's a new +20% chance of giving +3 LV instead of +2 or +1!
	image	First Try, I swear!	5.5 M Gravel	If you throw the LAST bravery sword first, and it kills the monster, you get a +10% Sword Max DMG bonus for the rest of the story. If it doesn't kill, this bonus resets back to 0%
12
	image	Amplifier Stackin'	9 M Redstone	You now get an additional +0.50x Multiplier at the Dawg Den for every 10 total charge across all amplifiers!
	image	Geez String	441.4 K Eighth Note	Permanently unlocks a new String Type for the Harp!
	image	Final Ballad of the Snail	802.1 K Treble Note	1.04x higher success chance when leveling up Snail for every Power of 10 Trebel Notes you have
13
	image	Fractalfly Trickledown	1.1 M Quaver Note	+15% All Skill Efficiency, and +10% All Skill EXP gain per Undying Hive Layer you've destroyed!
	image	Hefty Harp	1.6 M Treble Note	Adds +1 more string to the Harp
	image	Reroll Keeper	50.4 M Bruntine	Each unused reroll you have in a Bravery Story gives +10% Sword Max DMG
14
	image	6th Bucket!	64.6 M Mythril	Adds another bucket at the Well!
	image	Purple Amplifier	7.6 M Treble Note	Adds a new Amplifier stone to interact with at the Dawg Den!
	image	Gloomie Lootie	135.4 M Freezium	+5% Drop Rate for each Colony of Gloomie Mushrooms defeated!
15
	image	Variety Effect	173.3 M Freezium	Strings give +30% more for each unique string type on your harp
	image	Gloomie Expie	22.6 M Quaver Note	+25% Class EXP gain for each Colony of Gloomie Mushrooms defeated!
	image	Gloomie Opie	28.9 M Sharp Note	+10% Villager EXP gain for each Colony of Gloomie Mushrooms defeated!
	image	Noise Reduction Therapy	37 M Quaver Note	1.20x Stealth bonus for all ninjas for every Power of 10 Quaver Notes you have
16
	image	Gloomie Mulch	60.5 M Eighth Note	ALL monsters across all the worlds of IdleOn respawn +10% faster!
	image	Multitudinal Harp	77.5 M Quaver Note	Adds +1 more string to the Harp
	image	7rth Barckot?!	1.2 B Cobaltine	Adds another bucket at the Well!
17
	image	White Amplifier	2 B Freezium	Adds a new Amplifier stone to interact with at the Dawg Den!
	image	Aye String	208 M Sharp Note	Permanently unlocks a new String Type for the Harp!
	image	Last Bucket!	4.3 B Bruntine	Adds another bucket at the Well!
18
	image	Rift Guy	5.5 B Gravel	Uncovers the true meaning of life
	Unobtainable
	image	Sumptuous Harp	558.4 M (F)Clef Note	Adds +1 more string to the Harp
	image	Dark Amplifier	915 M (G)Clef Note	Adds a new Amplifier stone to interact with at the Dawg Den!
19
	image	9th Bucket!	14.7 B Freezium	Adds another bucket at the Well!
	image	Bee String	1.5 B (G)Clef Note	Permanently unlocks a new String Type for the Harp!
	image	Bucket Finale!	30.9 B Sweetium	Adds another bucket at the Well!

EXP Requirements

Level	Xp required	Level	Xp required	Level	Xp required
2	754	12	2 M	22	565.2 M
3	2,284	13	3.6 M	23	964.3 M
4	6,194	14	6.5 M	24	1.6 B
5	15,084	15	11.7 M	25	2.8 B
6	33,973	16	20.7 M	26	4.7 B
7	72,310	17	36.5 M	27	7.9 B
8	147.6 K	18	63.8 M	28	13.3 B
9	291.6 K	19	110.9 M	29	22.2 B
10	561.9 K	20	191.7 M	30	37.2 B
11	1.1 M	21	329.9 M

The Caverns

The caverns are located in the hole, they are unlocked by leveling up Polonai.

Shallow Caverns

The Shallow Caverns are the first set of caverns in The Caverns.

The Well

The Well
Cavern Info
Type	Resource Producer
Biome	Shallow Caverns

Collect sediments from buckets to spend on upgrades or  Opals.
With the (image)Bar Expand-o-rama upgrade you can expand the cap every time you hit the max,
Once you reach 14 expansions you will need the (image)UBER Bar Expand-o-rama-hala expansions upgrade to expand further.
You can unlock new buckets from Kaipu.

All Sediments

Sediment	Rocks to Unlock
Gravel	Unlocked From start
Goldust	Clear 50  Rocks to Unlock
Redstone	Clear 500  Rocks to Unlock
Mythril	Clear 9,000  Rocks to Unlock
Cobaltine	Clear 125 K  Rocks to Unlock
Bruntine	Clear 1.5 M  Rocks to Unlock
Freezium	Clear 20 M  Rocks to Unlock
Sweetium	Clear 100 M  Rocks to Unlock
Rad Coral	Clear 500 M  Rocks to Unlock
Hyper Coral	Clear 2 B  Rocks to Unlock

Cost of Opals in Gravel

Opal	Cost	Opal	Cost
1	1	10	67.4 M
2	6	11	446.1 M
3	60	12	3 B
4	1,042	13	21 B
5	6,708	14	150.1 B
6	41,984	15	1.1 T
7	261.3 K	16	8.3 T
8	1.6 M	17	63.9 T
9	10.4 M	18	506.8 T

The Motherlode

The Motherlode
Cavern Info
Type	Skilling Node
Biome	Shallow Caverns

The (image)engineer vilager is located here
Mine the Motherlode to get ore, after a certain amount of ore gained you can and gain an  Opal,
then the efficiency required to mine the motherlode increases and so is the ore amount required.
You are capped at 5 layers broken per day, which is also shared with the other caverns related to skilling. When the limit is reached, the Motherlode will tragically proclaim "Please, no more! At least give me a day to recover, just a day... come back tomorrow!".

Eff and Ore needed per layer

Layer	Eff	Ore	Layer	Eff	Ore
1	9,000	440	21	1.1 B	3.1 B
2	16,200	968	22	2.1 B	6.8 B
3	29,160	2,129	23	3.7 B	15 B
4	52,488	4,685	24	6.7 B	33.1 B
5	94,478	10,307	25	12 B	72.7 B
6	170.1 K	22,675	26	21.7 B	160 B
7	306.1 K	49,887	27	39 B	351.9 B
8	551 K	109.8 K	28	70.2 B	774.2 B
9	991.8 K	241.5 K	29	126.4 B	1.7 T
10	1.8 M	531.2 K	30	227.6 B	3.7 T
11	3.2 M	1.2 M	31	409.7 B	8.2 T
12	5.8 M	2.6 M	32	737.4 B	18.1 T
13	10.4 M	5.7 M	33	1.3 T	39.9 T
14	18.7 M	12.4 M	34	2.4 T	87.8 T
15	33.7 M	27.4 M	35	4.3 T	193.1 T
16	60.7 M	60.2 M	36	7.7 T	424.9 T
17	109.3 M	132.5 M	37	13.9 T	934.7 T
18	196.7 M	291.5 M	38	25.1 T	2.1 Qa
19	354.1 M	641.3 M	39	45.1 T	4.5 Qa
20	637.4 M	1.4 B	40	81.3 T	10 Qa

The Dawg Den

The Dawg Den
Cavern Info
Type	Fighting Area
Biome	Shallow Caverns

Fight hounds, each hound kill gives a score, hounds that stay alive for too long start to generate fear. once the fear bar fills up you lose.
You can get  Opals based on your highest score.
The Score Multiplier can be increased by charging the amplifiers by clicking on them, to reset you need to hold down.
Amplifiers are unlocked through Kaipu, Engineer of Schematics.

List of all Amplifiers

Image	Name	Buff	Score
	Bigger Bite	Hounds now have a base attack value of X	+0.11x
	Elusive Instinct	Hounds now require X Accuracy for 100% hit chance	+0.09x
	Canine Recovery	All hounds now heal X% HP every 3s	+0.08x
	Bigger Bow Bow	Hounds have a 10% chance to spawn BIG with Xx HP and DMG	+0.10x
	Doggo EMP Effect	Somehow the hounds now make your attacks cost Xx more MP	+0.08x
	Cursed Howl	Hounds have a 5% chance to be cursed, causing Xx more Fear	+0.07x
	Den Despair	Start with your fear meter filled to X%	+0.10x
	Fast And Deadly	Hounds cause fear X seconds faster than normal	+0.07x

Monument Of Bravery

Monument Of Bravery
Cavern Info
Type	Monument
Biome	Shallow Caverns

List of all Bonuses

Hours	Bonus
1	Swords deal MinDmg-MaxDmg damage
80	+2 additional Sword
300	You can Re-Throw 5 swords per story
750	+1 additional Sword
2000	You get 1 Retelling per story
5000	+1 additional Sword
10000	+10 Re-Throws per story
24000	+1 additional Sword

List of all Buffs from fighting

Bonus	type	Can Appear At
+1  Opal	Self-Explanatory	Wave 1+
+% Mining Efficiency	Additive to star sign, Void vial, Mining Cards	Wave 1+
x Bucket Fill Rate	Multiplicative	Wave 1+
x cooking speed	Multiplicative	Wave 1+
+% EXP Gain for Villagers	Additive	Wave 2+
x Gaming Bits Gain	Multiplicative	Wave 3+
+% Chance for Bravery Opals	Multiplicative	Wave 6+
+% DMG for all Characters	Additive	Wave 10+
x Bell Ring & Ping Rate	Multiplicative	Wave 17+
+% All Monument AFK Gain	Additive	Wave 32+
x Bravery Bonuses Multi	Multiplicative	Wave 47+

Hp of Each Wave

Wave	HP	Wave	HP	Wave	HP	Wave	HP
1	10	26	271.7 K	51	378.4 M	76	398.8 B
2	32	27	366.9 K	52	501.7 M	77	525.3 B
3	67	28	494.9 K	53	664.8 M	78	691.8 B
4	120	29	666.6 K	54	880.6 M	79	910.9 B
5	199	30	896.8 K	55	1.2 B	80	1.2 T
6	315	31	1.2 M	56	1.5 B	81	1.6 T
7	482	32	1.6 M	57	2 B	82	2.1 T
8	721	33	2.2 M	58	2.7 B	83	2.7 T
9	1,060	34	2.9 M	59	3.6 B	84	3.6 T
10	1,537	35	3.9 M	60	4.7 B	85	4.7 T
11	2,205	36	5.2 M	61	6.2 B	86	6.2 T
12	3,136	37	7 M	62	8.3 B	87	8.2 T
13	4,426	38	9.3 M	63	10.9 B	88	10.8 T
14	6,208	39	12.4 M	64	14.4 B	89	14.2 T
15	8,662	40	16.5 M	65	19 B	90	18.6 T
16	12,028	41	22 M	66	25.1 B	91	24.5 T
17	16,635	42	29.3 M	67	33.1 B	92	32.1 T
18	22,923	43	39.1 M	68	43.7 B	93	42.2 T
19	31,487	44	52 M	69	57.7 B	94	55.5 T
20	43,126	45	69.1 M	70	76.1 B	95	72.9 T
21	58,915	46	91.9 M	71	100.3 B	96	95.8 T
22	80,295	47	122 M	72	132.2 B	97	125.9 T
23	109.2 K	48	162 M	73	174.3 B	98	165.3 T
24	148.2 K	49	215.1 M	74	229.7 B	99	217.1 T
25	200.8 K	50	285.4 M	75	302.7 B	100	285.1 T

Bravery Monument Defeat Dialogue

So you as well have an undying lust for battle, I wish you could've fought with me in my final hour...

Fighting to the bitter end, we really did make the best of this test known as life...

A weaker gamer would have run at some point, but I'm glad to know at least you would've stayed with me!

... and when the dust settled there were no bonuses kept, just an everlasting idea of bravery.

I always said I'd rather live by what I live by than die when I'm fine

So there you have it, that's the story! I tried so hard, and got so far, but, well you know how it ended...

Ah don't feel too bad for me! I'm a master mental gymnast, I already see the loss as a win!

I... lost? I guess I only thought about the good times, I forgot that's how it ended...

Wait no no, that's not how it went... I must have been thinking about a friend, I would never have lost like that!

Well, that's my story! Standing up against true evil with honor, bonuses be darned!

Bravery Monument Running Away Dialogue

Maybe when I was younger, before I came to understand the virtue of bravery...

You really think running was an option? To abandon the fight, all for a few bonuses?

Huh, well uh, I never actually considered running away... probably why I have a monument and you don't!

No no, that's not how MY story ended, but I suppose everyone has their own story to tell...

Well that's not how MY story ended, but I suppose everyone has their own story to tell...

No wonder I was left to fend for myself, everyone always thinks to run in the face of trouble...

Ah, you didn't think I'd want to risk it eh? Even just one more fight?

All the bonuses in the world wouldn't have convinced me of running!

The bonuses may be comforting now, but I wouldn't be able to live with a guilty conscience...

Run away? Bah, just the thought... maybe next time you'll stand by me 'till the end!

I would never run, but go ahead and keep your crummy bonuses... they're worthless compared to the glory of battle!

I'm not surprised your mind thinks to flee... you weren't the only one who left me to perish!

Ugh, It's always about bonuses these days... no one is in it for the glory like me!

No wonder I had to fight alone, all you gamers think about is running away!

I think I had one more fight in me, but that's a story for a different day...

I couldn't disagree more, but I know bonuses mean so much to so many...

You would rather I run than be brave? I mean yea, you get to keep all those bonuses forever... but still!

Enemy Commentary thing Bravery Monument

Enemy	Commentary thing
DIRTY NAPKIN	Eww gross who knows where that thing has been
LIL BABY SPIDER	AAAHH KILL IT KILL IT
STRAW SCARECROW	A truly intimidating and very much real enemy stood before me
DIM NIGHTLIGHT	In darkness the monsters under the bed thrive
BEDTIME SHADOW	AAAAAAAAAHHHH MONSTER
THE 1% OF GERMS	If the sanitizer couldn't get them what chance do I have
SLOW ESCORT NPC	WHY CANT YOU MOVE FASTER YOU FIEND
MONDAYS	You haven't stopped bothering me since first grade
BROCCOLINI	Terrible taste and pretentious name, I HATE YOU
POP SONG	I don't care how many people like it, it sucks!!!
DOLL TOY	The lamest of all toys, action figure gang for life!
INSIDE OUT SOCK	I nearly lost my mind fixing you every day
MILKLESS CEREAL	Truly a horrendous sight to behold on weekend morning
EXCESS CALORIES	Why must you take such a hideous form upon my body?
SLIGHTLY SHORT LEG	You FIEND, you ALWAYS make the chair wobble uncontrolably
MUMBLE RAPPER	What are you even SAYING???
VENTRILAKWIST	Speaking without moving your mouth should be illegal
SPELLING TEST RESULT	An F? Noooooooo!
AIRPLANE BABY	SHUT UP SHUT UPPPPPP
SPECIFIC CROW	Grrr, the one that stole my food Sunday March 11th 2007...
CLOWN	Huh? I wasn't afraid of clowns, I loved clowns!
ABSENCE OF CLOWNS	NOOOOOOOOOOOOOOOOoooooo!
DISCORD CHAT FLEX	Terrible, just terrible...
VIDEO GAMES	The worst media form! You poison our youth!
:/ BORED GAMER	It's been a while since the last update, they have formed an army.

The Bell

The Bell
Cavern Info
Type	Buff Giver
Biome	Shallow Caverns

List of Bell Actions

Action	Description
	Ring the Bell to get 1 of 4 bonuses: +10% Bucket Fill Rate +10% Harp Note Gains +0.5% All Vilager EXP +0.3% Daily Lamp Wished
	Ping the Bell to get +1  Opal
	Ping the bell for a % chance to unlock a new improvement method! Base Chances 60% 33% 23% 17% 14%
	Renew The bell to reset all bonuses(Does NOT reset ping cost), and keep your opals and Improvement Methods

List of Bell Improvement Methods

Method	Cost
+% Bell Ring/hr	Coins
+% Bell Clean/hr	Mythril
+% Bell Ring/hr	Bits
+% Bell Ping/hr	Eighth Note
+% Bell Ring/hr	Atoms
+% Bell Ring/hr	?

Cost for each ping

Opals gotten so far	Cost	Opals gotten so far	Cost	Opals gotten so far	Cost
0	10	10	114.8 K	20	145.1 M
1	36	11	245.8 K	21	284.6 M
2	109	12	518.8 K	22	555.7 M
3	297	13	1.1 M	23	1.1 B
4	769	14	2.2 M	24	2.1 B
5	1,902	15	4.6 M	25	4 B
6	4,543	16	9.2 M	26	7.7 B
7	10,503	17	18.6 M	27	14.8 B
8	23,839	18	37.1 M	28	28.3 B
9	52,800	19	73.5 M	29	53.9 B

Glowshroom Tunnels

The Glowshroom Tunnels are the second set of caverns in The Caverns.

The Harp

The Harp
Cavern Info
Type	Resource Producer
Biome	Glowshroom Tunnels

All Types of strings

Letter	Name	Strum Effect	LV Bonus
		Creates X of the note you're tuned to!	+% Harp Note Gain
		Has a X% chance of finding an opal! This decreases each time an opal is found.	x Harp Note Gain
		Nothing	X Harp Power/hr
		Creates X(1/4 of C) of the tune, and notes next to the tune!	+% Harp Note Gain
		Gives X EXP to all string types!	+X% String EXP Gain!
		Creates X(1/16 of C) of every note you know!	+% Harp Note Gain
		good question	a better question

All Types of Notes

Image	Name	Cost to unlock
	Crotchet Note	Unlocked From Start
	Natural Note	150
	Bass Note	1,909
	Treble Note	15,783
	Eighth Note	109.3 K
	Quaver Note	687.7 K
	Sharp Note	4.1 M
	(F)Clef Note	23.1 M
	(G)Clef Note	126.8 M
	Sixteenth Note	681 M

The Lamp

The Lamp
Cavern Info
Type	Buff Giver
Biome	Glowshroom Tunnels

Get Wishes every daily reset to spend on Buffs, Opals and More!

All Types of Wishes

Image	Name	Buff	Cost
	More Wishes	Unlocks New Wish Types	(Wishes Unlocked)^2
	Another Try	Reset All Invested Opals/Conjurer Points	6
	1000000 Opals	+1 Opal	1+(OpalsGotten+2)
	Bring Them Back	+12 Hours of respect for a Monument of your choice	2
	World 4 Stuff	+25% Cooking Speed +10% Shiny Pet LV Up & Breedability Rate +8% Lab EXP gain	1(+1 every 5 levels)
	A Moderate Discount	15% discount on next Schematic creatiin	2
	World 5 things	+15% Sailing Loot Value +40% Bits gain +10% Divinity Pts gain	1(+1 every 20 levels)
	Infinite Resources	+0.25x Well and Harp resources	1
	World 6 Majigers	+20% Next Crop Chance +35% Stealth for Ninja twins +12% All Essence gain	1(+1 every 5 levels)

The Undying Hive

The Undying Hive
Cavern Info
Type	Skilling Node
Biome	Glowshroom Tunnels

Catch the Hive to get Fractal Fly, after a certain amount of Bugs gained you can and gain an  Opal,
then the efficiency required to catch the hive increases and so is the bugs amount required.
You are capped at 5 layers broken per day, which is also shared with the other caverns related to skilling.

Eff and Bugs needed per layer

Layer	Eff	Bug	Layer	Eff	Bug
1	9,000	440	21	1.1 B	3.1 B
2	16,200	968	22	2.1 B	6.8 B
3	29,160	2,129	23	3.7 B	15 B
4	52,488	4,685	24	6.7 B	33.1 B
5	94,478	10,307	25	12 B	72.7 B
6	170.1 K	22,675	26	21.7 B	160 B
7	306.1 K	49,887	27	39 B	351.9 B
8	551 K	109.8 K	28	70.2 B	774.2 B
9	991.8 K	241.5 K	29	126.4 B	1.7 T
10	1.8 M	531.2 K	30	227.6 B	3.7 T
11	3.2 M	1.2 M	31	409.7 B	8.2 T
12	5.8 M	2.6 M	32	737.4 B	18.1 T
13	10.4 M	5.7 M	33	1.3 T	39.9 T
14	18.7 M	12.4 M	34	2.4 T	87.8 T
15	33.7 M	27.4 M	35	4.3 T	193.1 T
16	60.7 M	60.2 M	36	7.7 T	424.9 T
17	109.3 M	132.5 M	37	13.9 T	934.7 T
18	196.7 M	291.5 M	38	25.1 T	2.1 Qa
19	354.1 M	641.3 M	39	45.1 T	4.5 Qa
20	637.4 M	1.4 B	40	81.3 T	10 Qa

The Gloomie Grotto

The Gloomie Grotto
Cavern Info
Type	Fighting Area
Biome	Glowshroom Tunnels

Fight Gloomie Mushrooms, after a certain amount of kills, you can spawn the Monarch
Killing him will net you an  Opal, and the Kills required increase and so is the next monarch's Health.
This is the only source of the Dragon Warrior Statue

Kills Required and Monarch HP

Opals Obtained	Kills	Monarch HP
0	5,000	100 B
1	17,000	750 B
2	57,800	5.6 T
3	196.5 K	42.2 T
4	668.2 K	316.4 T
5	2.3 M	2.4 Qa
6	7.7 M	17.8 Qa
7	26.3 M	133.5 Qa
8	89.3 M	1 Qi
9	303.6 M	7.5 Qi
10	1 B	56.3 Qi
11	3.5 B	422.4 Qi
12	11.9 B	3.2 Sx
13	40.6 B	23.8 Sx
14	137.9 B	178.2 Sx
15	469 B	1.3 Sp
16	1.6 T	10 Sp
17	5.4 T	75.2 Sp
18	18.4 T	563.8 Sp
19	62.7 T	4.2 O
20	213.1 T	31.7 O

Monument Of Justice

Monument Of Justice
Cavern Info
Type	Monument
Biome	Glowshroom Tunnels