Vaulted Dungeon Elevation Pack is part of the Dungeon of Doom series. It is made of "Dwarvenite." 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.
Angled Ledges Pack comes with these 12 pieces:
(4) Dungeon Elevation Block
(2) Dungeon Ramp
(4) Dungeon Elevation Pillar
(2) Elevation Arch