Pillar of Hercules By: Christena November 19, 2015August 26, 2018 Christena's PhotographyCarlsbad Caverns, Caving, Natural Wonders, New Mexico, Slaughter Cave3 Comments on Pillar of Hercules Inside Slaughter Cave at Carlsbad Caverns, New Mexico. Photograph – © Christena Stephens Photography Read More