I'm heading off to hike around the Copper Canyon area of Mexico from the 19th to 29th of March 2010. I've no idea what the internet situation will be like there, but if I can, I'll write some updates while there.
Some background info:
Map: This is the area in Google
General info: Wikipedia article
I'm going armed with a little more information than that, but there's not too many details available. I have a guidebook from 1994, a compass, a GPS, and a schedule for the beautiful train that runs through the area from Chihuaha. I'm hoping to pick up some proper maps when I get to Creel on Saturday.