PSM 2012
The slide show given at the 2012 NSS Convention by Tony Akers & Ron Adams. A collection of photos and maps about our adventures in the Sierra Mazateca, Oaxaca, Mexico during a cave exploration expedition from periods inbetween December 2011 and February 2012.

Photos by various members of the expedition. Go to www.proyectosierramazateca.org to learn more!!
148 photos · 71 views
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