Figure 1: Map of our study area. (A) Location of our study area near Tapijulapa, in Tabasco, Mexico. (B) Detail map of the Cueva del Azufre showing the outflow into the El Azufre (EA) and the three different cave chambers investigated (CA-II; CA-V; CA-X). (C) The sites Arroyo Bonita (AB), El Azufre (EA), Rio Oxolotan (RO), and the Cueva del Azufre (CA) were included in the present study.