Black Sands of the Armadillo

Publisher's blurb: You realize you are in a dungeon with walls of black sand with wood beams to support the ceilings. In fact, it reminds you of a mine or something out of the old wild west. In any case, it's better than the inky void you were just trapped in. Taking a moment to catch your breath, you continue onward, seeking to find an exit from this mine and hoping to finally, FINALLY find an exit portal from this realm.