AMCS
Activities Newsletter

Mexico News 2
long and deep cave lists, compiled by Peter Sprouse 28

Huautla ’81, by Mark Minton 10
Sistema Purificación, by Peter Sprouse 13
Sierra de Guatemala, by Bill Elliott 19
Tilaco Area, by Carlos Lazcano 25
Progress at San Bernardo, by Steve Knutson 30
An Improved Ropewalker, by Ron Simmons 34
Caves of the San Miguel Doline, by Roy Jameson and Patricia Mothes 37
Exploration of Boca del Río Apetlanca, by Sheri Engler 43
Sump Diving in Carrizal, by Wayne Russell 49
A Piezoelectric Lamp Ignitor, by Mark Minton 52
Caves of El Rancho Minas Viejas, by Paul Duncan 55
Zongolica: 1980-81 French Expedition, by Philipe Ackerman and Genevieve Rouillon 59
Deer Tracks in Cueva de los Pájaros, by Roy Jameson 71
Composite Diving Tanks, by Bill Stone 75
The San Agustín Sump, by Bill Stone 81
Caves of the Sierra de El Abra, by Gerald Atkinson 87
Recon to Miquihuana, by Ron Jameson 93