Passageways - Hallways 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.
Passageways - Hallways Pack comes with these 29 pieces:
(12) Passage Wall
(2) Passage Wall (Magnetic)
(4) Passage Short Wall
(7) Dungeon Floor
(2) 1x2 Dungeon Floor
(2) Magnetic Swinging Blade Trap