Video: Kayaking Through Underground Caves in Mexico

In this video, we join kayakers Rafa Ortiz, Jared Meehan, and Andrew Pollock as they head to southern Mexico to explore a system of underground rivers that pass through an intricate cave system. There aren't any massive waterfalls to drop, or Class V rapids to run, but there is a great sense of exploration and adventure as they paddle through this otherworldly environment. Catch a glimpse of a part of our planet that few ever get a chance to see, and marvel at what these intrepid kayakers find as they drift along.