This is the first 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 Sonnie’s essay about the climb, as well as see photos from Andrew Burr (who was along to do the driving and documenting), click here.
