This is for 2X the number of Unpainted Base Cavern Set Pieces. (144)  Pieces. 
You Get 2X the Floor Tiles and 2X the Walls and; One set of Accessories. 
 
The Unpainted Base Cavern Set includes 42 Cavern Tiles,  52 Cavern and Rock Walls, and 50 Accessories! 
This Price is for an Unpainted Set.
 
Cavern Tiles (2 * 21 Pieces)
9 - 2x2 Tiles 1/2" Deep
4 - 4x4 Tiles 1/2" Deep
2 - 6x6 Tiles 1/2" Deep
1 4x4 Raised Tile 1 & 1/4" Deep
5 - 2x2 Rased Tiles 1 & 1/4" Deep
 
Cavern and; Rock Walls (2 * 26 Pieces)
3 - 1" Cavern Stalagmite Walls
2 - 2" Cavern Walls with pools.
2 - 2" Cavern Walls with 2 Stalagmites
2 - 2" Cavern Walls with Tall Stalagmite
2 - 2" Cavern Corner Pieces
1 - 1" Cavern Wall piece.
 
4 - 1/2" Ruined Stone Columns
1 - 3" Rock Wall Arch and Door
4 - 2"x2" Rock Wall Corners
2 - 3" Rock Walls
3 - 2" Rock Walls
 
Accessories (50-53 Pieces, Depends how Goblins count... eh?) See The picture!
5 Steps
- 3" wide step
- 2 3/4 inch wide step
- 1 3/4" wide step
- 2 3/8ths " wide step
- 3 14" corner rounding stair
 
2 - 1" Cavern Wood Doors
2  - 1 & 3/4" Cavern Arch Wood Doors 
2 small Crystals
2 Small Skulls
3 Barrels
2 Bags
3 Coin Piles
3 Sack Piles
2 Single Sacks
1 - 2 1/2" Rose Dais
1- 2 1/2" Oval half Step
1 large crystal
1 wide crate
3 1/2" square crates 4 small stalagmites
2 more small stalagmites
1 Round chest
9 Broken Columns(matches w/rock walls)
3 stone slabs With 3 skulls (they go on the stone slabs)
2 skull piles