He was an active member of the Wilderness Society for much of his life .
Keeling was an enthusiastic outdoorsman who made many hiking and camping trips to the Western mountains , particularly the Cascade Mountains of Washington state .
Keeling was an active outdoorsman of the Wilderness Society for much of Keeling 's life .
Keeling was an enthusiastic outdoorsman who made many hiking and camping trips to the Western mountains , particularly the Cascade Mountains of Washington state .