AMCS
Activities Newsletter

Mexico News 2
International News 4
long and deep cave lists, compiled by Peter Sprouse 8

Xilitla Karst, by Peter Sprouse 10
Sistema Huautla, by Jerry Atkinson 13
Tilaco Project Report, by Sergio Zambrano 18
Sierra de Guatemala, by Bill Elliott 20
Purificación Area Project Report, by Terri Treacy 24
Eulogy to Dr. Féderico Bonet Marco, by James Reddell 30
Golondrinas . . . ¡Otra Vez!, by Don Broussard 32
Recent Biological Discoveries in Mexico, by James Reddell 37
The Piloztoc Connection, by Bill Liebman 40
Unstudied Karst Areas of Mexico, by Peter Sprouse 42
Caving in Western Mexico, by James Reddell 46
The Exploration of Sumidero de Oyamel, by Dale Pate 54
Across the Sima Grande, by Mark Minton 61
AMCS Cave Map Symbols, by Peter Sprouse 64
The Caves of Cuesta Colorada, by George Veni 68
Sumidero de San Bernardo, by Steve Knutson 71
Short Penetration Sump Diving, by Bill Stone 74
La Silleta, by Peter Sprouse 80
Computer-Drawn Passage Walls, by David McKenzie 86