Yellowstone National Park, USA - Over The Years.

Alan Hughes & John Mac @ Yellowstone National Park, USA - 1977.

Yellowstone National Park, USA - Over The Years.

Alan Hughes & John Mac @ Yellowstone National Park, USA - 1977.

Yellowstone National Park, USA - Over The Years.

Yellowstone National Park, USA - 1977.

Yellowstone National Park, USA - Over The Years.

John Mac @ Yellowstone National Park, USA - 1977.

Yellowstone National Park, USA - Over The Years.

Alan Hughes & John Mac @ Yellowstone National Park, USA - 1977.

Yellowstone National Park, USA - Over The Years.

Yellowstone National Park, USA - 1977.

Yellowstone National Park, USA - Over The Years.

John Mac @ Yellowstone National Park, USA - 1977.

Yellowstone National Park, USA - Over The Years.

Yellowstone National Park, USA - 1977.

Yellowstone National Park, USA - Over The Years.

Yellowstone National Park, USA - 1982.

Yellowstone National Park, USA - Over The Years.

John Mac @ Yellowstone National Park, USA - 1982.

Yellowstone National Park, USA - Over The Years.

Yellowstone National Park, USA - 1982.

Yellowstone National Park, USA - Over The Years.

John Mac @ Yellowstone National Park, USA - 1982.

Yellowstone National Park, USA - Over The Years.

John Mac @ Yellowstone National Park, USA - 1982.

Yellowstone National Park, USA - Over The Years.

Yellowstone National Park, USA - 1982.

Yellowstone National Park, USA - Over The Years.

Yellowstone National Park, USA - 1982.

Yellowstone National Park, USA - Over The Years.

Yellowstone National Park, USA - 1982.

Yellowstone National Park, USA - Over The Years.

Yellowstone National Park, USA - 1982.

Yellowstone National Park, USA - Over The Years.

Yellowstone National Park, USA - 1982.

Yellowstone National Park, USA - Over The Years.

Yellowstone National Park, USA - 1982.

Yellowstone National Park, USA - Over The Years.

Bernie @ Yellowstone National Park, USA - 1982.

Yellowstone National Park, USA - Over The Years.

Scona @ Yellowstone National Park, USA - 1982.