How Not to Climb a Mountain
John Muir gets stuck
Ask the Expert
Daniel Arnold is the author of Early Days in the Range of Light, in which he retraces Muir's climbs in the Sierra.
"Sierra climbers should have, at a minimum, sticky rubber boots or climbing shoes, a 60-meter dynamic rope, a handful of nuts and cams, and a partner. When in a tough spot, preparation and training are preferable to trust in angelic intervention."