These pages document ongoing studies of Mexican caves. Emphasis
is placed on collaborative studies being conducted by the Texas Memorial Museum, the
University of Texas Zoology Department, the Illinois Natural History Survey, the Proyecto Espeleológico Purificación and several institutions in Mexico.
The March 1997 expedition (via the University of Texas), with lots of links, pictures, and information.
The Spring 1998 expedition, with details on some of the people involved and other places to obtain information. (Work done at several sites in the states of Coahuila and Tamaulipas.)
The Thanksgiving 1998 trip, with emphasis on diving, catfish, and crustaceans. (Work done primarily at one site in the state of Coahuila, with a second site in Nuevo Leon.)