Don Chitwood:
Lichen on rock - Maroon Bells Colorado
Don Chitwood:
IMPOSTOR
Don Chitwood:
Lichen encrusted rock at 13,898 ft.
Don Chitwood:
Limestone Faces
Don Chitwood:
DC67 Yellow lichen - Aspen Mountain
Don Chitwood:
Air photo of ancient trade routes?
Don Chitwood:
Spire Cove, Kenai Fjords National Park, Alaska
Don Chitwood:
DC33 Maroon Creek