These lists of Mexico's longest and deepest caves and the deepest pits in Mexican caves are maintained by Mark Minton. Send updates and corrections to him at mminton@illinoisalumni.org.
Long Caves of Mexico (at least 1.5 km, PDF, October 2011)
Deep Caves of Mexico (at least 200 m, PDF, October 2011)
Deep Pits of Mexico (at least 100 meters, PDF, October 2011)