Grand Canyon National Park, Arizona, USA - Over The Years.

John Mac @ Grand Canyon, Arizona, USA - 1977.

Grand Canyon National Park, Arizona, USA - Over The Years.

John Mac @ Grand Canyon, Arizona, USA - 1977.

Grand Canyon National Park, Arizona, USA - Over The Years.

Grand Canyon, Arizona, USA - 1977.

Grand Canyon National Park, Arizona, USA - Over The Years.

Grand Canyon, Arizona, USA - 1977.

Grand Canyon National Park, Arizona, USA - Over The Years.

John Mac @ Grand Canyon, Arizona, USA - 1977.

Grand Canyon National Park, Arizona, USA - Over The Years.

John Mac & Alan Hughes @ Grand Canyon, Arizona, USA - 1977.

Grand Canyon National Park, Arizona, USA - Over The Years.

John Mac @ The Grand Canyon National Park, Arizona, USA - 1978.

Grand Canyon National Park, Arizona, USA - Over The Years.

John Mac & Peter Charlton @ The Grand Canyon National Park, Arizona, USA - 1978.

Grand Canyon National Park, Arizona, USA - Over The Years.

John Mac @ The Grand Canyon National Park, Arizona, USA - 1978.

Grand Canyon National Park, Arizona, USA - Over The Years.

John Mac @ The Grand Canyon National Park, Arizona, USA - 1978.

Grand Canyon National Park, Arizona, USA - Over The Years.

John Mac @ The Grand Canyon National Park, Arizona, USA - 1978.

Grand Canyon National Park, Arizona, USA - Over The Years.

The Grand Canyon National Park, Arizona, USA - 1978.

Grand Canyon National Park, Arizona, USA - Over The Years.

The Grand Canyon National Park, Arizona, USA - 1978.

Grand Canyon National Park, Arizona, USA - Over The Years.

The Grand Canyon National Park, Arizona, USA - 1978.

Grand Canyon National Park, Arizona, USA - Over The Years.

The Grand Canyon National Park, Arizona, USA - 1978.

Grand Canyon National Park, Arizona, USA - Over The Years.

The Grand Canyon National Park, Arizona, USA - 1978.

Grand Canyon National Park, Arizona, USA - Over The Years.

John Mac @ The Grand Canyon National Park, Arizona, USA - 1978.

Grand Canyon National Park, Arizona, USA - Over The Years.

John Mac @ The Grand Canyon National Park, Arizona, USA - 1978.

Grand Canyon National Park, Arizona, USA - Over The Years.

John Mac @ The Grand Canyon National Park, Arizona, USA - 1978.

Grand Canyon National Park, Arizona, USA - Over The Years.

Peter Charlton & John Mac @ The Grand Canyon National Park, Arizona, USA - 1978.

Grand Canyon National Park, Arizona, USA - Over The Years.

John Mac & Allison @ The Grand Canyon National Park, Arizona, USA - 1978.