SierraRios is looking for participants and experienced oarsmen/safety boaters to join some raft-support expeditions to Mexico later this year. If you're at all interested check them out at "UPCOMING TRIPS":
RIO MULATOS-AROS: The Best Raft-Support Expedition in Mexico
148 miles, class III-IV, 9 days
August 26-September 4, 2011: rendezvous in Tucson/Douglas.
This is one of the finest long-distance wilderness rivers in Mexico and located just south of the Arizona border. The trip is comparable to a half Grand Canyon, triple Salt, or Salmon River trip with beautiful canyon, interesting side hikes, and fun rapids. Everyone is welcome: kayakers, rafters, and raft passengers/paddlers. Space is limited. This is primarily a class III trip and is suitable for intermediate kayakers. The 6 class IV rapids can be averted if desired.
RIO USUMACINTA : Sacred Monkey River of the Maya
88 miles, class II-III, 7-8 days
December 31-January 7: rendezvous in Palenque/Frontera, Chiapas. MORE INFO
The Usumacinta is the most voluminous river in Mexico and affords one of the greatest river journeys in the world. Join our rafting/kayaking expedition as we make our way down its canyons and stop to camp on giant pristine beaches, visit the Mayan ruins of Yáxchilan and Piedras Negras, enjoy the travertine waterfall of Busilhá, and navigate the big-water rapids of Cañon San José. This trip is suitable for intermediate and even novice paddlers. While you're down there, visit the ruins of Palenque and visit/paddle the cascadas de Agua Azul.