Publisher's blurb: A natural cave system gives way to man-made chambers, carefully built into the existing formations. Within it are many tombs—nearly all of them, opened. But the crypt is riddled with traps, and many would-be adventurers never escaped. Their bones litter the floor. At its heart lies a large chamber, and mysterious tomb emblazoned with the symbol of a crucifix. Deeper within the cave, too, someone—or something—has engraved the pattern of a sinister ritual into the earth…