The Caverns

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)the explorer 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

The Caverns

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

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 materials 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 the (image)Engineer villager.

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

Clear 50  Rocks to Unlock

Clear 500  Rocks to Unlock

Clear 9,000  Rocks to Unlock

Clear 125 K  Rocks to Unlock

Clear 1.5 M  Rocks to Unlock

Clear 20 M  Rocks to Unlock

Clear 100 M  Rocks to Unlock

Clear 500 M  Rocks to Unlock

Clear 2 B  Rocks to Unlock

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 destroy a layer 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.

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.
You Unlock more Amplifiers From The engineer.

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
+1  Opal	Self-Explanatory
+% Mining Efficiency	additive to star sign, Void vial, Mining Cards
x Bucket Fill Rate	Multiplicative
x cooking speed	Multiplicative
+% EXP Gain for Villagers	additive
x Gaming Bits Gain	Multiplicative
+% Chance for Bravery Opals	Multiplicative
+% DMG for all Characters	additive
x Bell Ring & Ping Rate	Multiplicative
+% All Monument AFK Gain	Additive
x Bravery Bonuses Multi	Multiplicative

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	Buff Giver
Biome	Glowshroom Tunnels

All Types of strings

Letter	Name	Strum Effect	LV Bonus
		Create X notes you're tuned to	+% Harp Note Gain
		X% chance to find 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

Hole Bonuses

Bucket Fill Rate

Name	Source	Description
Better Buckets	Schematics	Increases the base fill rate of all Well Buckets from 10/hr to 15/hr
Loadin' some 'Lode	Schematics	Gives +5 Bucket Fill Rate per Power of 10 Motherlode Ore mined
Hiring the Hounds from Beyond	Schematics	Gives +10 B.F.R. per 100 hounds defeated in best runs of each class
Motherlode ~ Bucket Synergy	Schematics	1.10x fill rate per Motherlode Layer you've destroyed!
Expander Extravaganza	Schematics	+20% Fill Rate per bar expansion across all sediment types!
Even Better Buckets	Schematics	Increases the base fill rate of all Well Buckets from 15/hr to 20/hr
Measurement 6	Measurements	+% Bucket Fill Rate
Monument Buff	Monument Of Bravery	x Bucket Fill Rate
Ringing The Bell	The Bell	+% Bucket Fill Rate
Infinite Resources	The Lamp	x Well resources