The Rio Iglesia Falls at -1450 m. One of the most important discoveries of the 1994 expedition was the junction between the Rio Iglesia and the subterranean Rio San Agustin. Their junction forms the "Main Drain" for Sistema Huautla, through which the majority of the water for the vast karst plateau flows. Rio Iglesia, by comparison, carries nearly 4 times the water previously seen in Sistema Huautla. Barbara am Ende illuminates the spectacular 13 meter waterfall that marks the junction. [photo ©1994 Bill Stone].
