For six weeks last winter, I traveled with my friend Peter Hudnut and photographer Justin Lewis through Mexico’s Sierra Madre Oriental Mountains, a canopy of tropical and montane forests that stretches nearly one thousand miles from Monterrey to Veracruz. The mountains of Mexico are the home of the Tarahumara Indians and the site of Alex Honnold’s epic 2014 free solo on El Sendero Luminoso. But our plan was to establish highlines. We loaded enough bolts and webbing for eight new lines into the Volkswagen, and headed south across the border. — Michael Holland
Photo: Potrero Chico—Spanish for “little corral”—is a collection of massive limestone spires that gates the northern entrance to the Eastern Sierra Madres. Peter walked this 220-foot long highline on Christmas Day, aptly naming it Feliz Navi Highline.