Depths

Publisher's blurb:

Just outside the Lonely Desert, on the edge of civilized lands stands a massive 200 ft., black cube known as The Brick. Glyphs and symbols adorn the brick, etched into its impossibly hardened sides in an ancient forgotten language. Some say the brick is the doorway between the living and the dead. Some say it is a gateway to another plane. Still others claim that the brick is the foundation for the entire world, and discovering its secrets will unlock the keys to the multiverse.