This photographer has done some interesting 'Light Paintings' with her pictures from Actun Tunichil Muknal. She had an exhibit based upon ATM.
"This series of photos and paintings is inspired by the Actun Tunichil Muknal (ATM) cave system in Belize, Central America. ATM is known for its miles of chambers believed by the Mayan to be the entry to the sacred underworld of Xibalba. In ancient times only dancing torch flame brought this pitch black world to life where fifty foot stalactites and stalagmites inspired reverence and creativity. Clay offering bowls, painted urns and full sacrificial skeletons are housed in crystalline limestone chambers to this day."
Via Best of Cayo