Mazestone

The Minotaur Labyrinths of the Twilight Forest are made of this blue-grey stone which comes in several variations (Mazestone, Mazestone Brick, Chiseled Mazestone, Decorative Mazestone Brick, Cracked Mazestone Brick, Mossy Mazestone Brick, Mazestone Mosaic and Mazestone Border). Mazestone is extremely hard to break, with twice the breaking resistance of obsidian. Unlike obsidian, however, Mazestone has weak blast resistance, and the various explosive creatures and traps in the Labyrinths will readily demolish large sections of the walls.

Those attempting to mine through the maze will notice that Mazestone wears down pickaxes at 16 times the normal rate.