San Actun and dos Ojos cave System - World's 2nd longest cave

During the August 2012 expedition a dry cave connection was made between Sistema Dos Ojo's Don's $100 Cenote entrance and Sistema Sac Actun's (Nohoch Nah Chich) Pet Cemetery entrance. It follows a similar path taken by Kay Walten, Gary Walten, and Dan Lins over a decade ago. 

The following team helped surveying the new connection: Don Arburn, Gill Ediger, Aida Ferreira, Devra Heyer, Carrie Hutchins, Pat Kambesis, Chris Lloyd, Rene Rogers Ohms, Bev Shade, Peter Sprouse (the cartographer), Terri Sprouse, German Yanez, and Jacinto Vela.

The cave system is now the longest underwater cave system known to man, with a total surveyed length of 308,407 m (=308 km) and a depth of 127.6 m, making it at the same time the second longest cave in the world (See Bob Gulden's list of longest caves in the world).

A complete report can be found in the December 2012 edition of the NSS news.

We are also pleased to report a recent underwater connection between Sistema del Mundo Escondido and Sistema Sac Actun by Alex Reato.

Future information on the exploration can be found on the website from the Quintana Roo Speleological Survey.