To access just the first of seven ritual offering chambers identified so far within Balamku, archaeologists must crawl flat on their stomachs through hundreds of feet of tortuously narrow passages. In the original report on the cave (recently located by archaeologist and GAM investigator James Brady of California State University, Los Angeles), Segovia identified 155 artifacts, some with faces of Toltec rain god Tláloc, and others with markings of the sacred ceiba tree, a potent representation of the Maya universe. In comparison, the nearby cave of Balankanché, a ritual site excavated in 1959, contains just 70 of these objects. “Balamku...