Burrows - Chamber Pack is part of the Dungeon of Doom series. It is made of "Dwarvenite" and includes some metal and magnetized parts. This item was initially available as an add-on pack during the Dungeon of Doom Kickstarter. The item comes in both painted and unpainted versions. Burrows - Chamber Pack comes with these 23 pieces: (2) Deadend End Chamber (2) 4x4 Small Quad Chamber (1) 4x5 Medium Quad Chamber (1) 5x5 Large Quad Chamber (6) Dirt Floor Insert (1) Web Floor Insert (1) Egg Sacs Insert (1) Rocky Pillar Floor Insert (7) End Cap (1) Short Straight Tunnel