This is the third video in a four-part series about Sonnie Trotter and Alex Honnold making the first one-day ascent of Logical Progression, a 28-pitch 5.13a route on El Gigante in Mexico's Basaseachi National Park. To read Sonnies essay about the climb, as well as see photos from Andrew Burr, click here. Watch Part One and Part Two of this video series.