After visiting Yosemite a year ago, and seeing El Capitan, @AmyK1 and I watched the documentary "Free Solo" on the plane on the way home. Probably the most impressive athletic feat in history, Alex Honnold, climbed the cliff with no ropes, no aid tools. This book is a history of Honnold's career in rock climbing, now expanded to include his account of the Freerider solo. Honnold is a good writer, but a climbing glossary would be beneficial.