Peter loved the back country and the mountains and yet had married a woman who thought the city of Boulder was a wilderness. He camped and hiked alone, usually in the Indian Peaks, and
on days when inspiration avoided him in his studio, he could often be found hanging at some gravitationally defiant angle on a rock face in Eldorado Canyon. Peter was a regular practitioner of
"free-soloing"— which involves climbing high rock faces without ropes or safety gear. I wouldn't have gone near the same vertical walls without scaffolding.