In reply to Harry Jarvis:
Some excellent reads on there, including several I didn't know of that sound great. Adam Nicholson's "Sea Room" is one obvious omission, and I would have included Mike Cawthorne's "Wilderness Dreams". An outdoor audience might well pick "A High and Lonely Place" of Jim Crumley's books, and of Kathleen Jamie's I personally preferred Findings and Sightlines to Surfacing. All great stuff though.