Jack Dykinga / Toroweap Overlook in sunrise light illuminating rim rocks with Colorado River far below, Grand Canyon National Park, Arizona, USA.

Jack Dykinga / Toroweap Overlook in sunset light illuminating rim rocks with Colorado River far below. Grand Canyon National Park, Arizona, USA.

Jack Dykinga / Lupan Point, looking west into sunset. Grand Canyon National Park, Arizona, USA, August.

Jack Dykinga / Matkatamiba Canyon with its Muave limestone scoured by erosion. Grand Canyon National Park, Arizona. May 2012.

Jack Dykinga / North Rim at Cape Royal with sunset storm light streaming in rays, backlighting the canyon ridges, Grand Canyon National Park, Arizona, USA

Jack Dykinga / South rim of Moran Point at sunrise, with the Colorado River below, Grand Canyon National Park, Arizona, USA

Jack Dykinga / View from Navajo Point to the west with the sun's rays silhouetting Angels Gate, Isis, Shiva and Zoroaster Temples next to Wotons Throne at sunset, Grand Canyon National Park, Arizona, USA

Jack Dykinga / Pinyon pine (Pinus edulis) and Utah juniper (Juniperus osteosperma) on kaibab limestone spires in morning fog, North Rim, North Kalbab Trail, Grand Canyon National Park, Arizona, USA

Jack Dykinga / Lichen covered rocks at Marble Viewpoint, Kaibab National Forest, Grand Canyon National Park, Arizona, USA

Jack Dykinga / Lichen covered rocks at Marble Viewpoint, Kaibab National Forest, Grand Canyon National Park, Arizona, USA

Jack Dykinga / A small waterfall is reflected in a pool at in North Canyon, Grand Canyon National Park, Arizona

Jack Dykinga / Jagged buttes catch the last light as the sun sets at Grandview Point, Grand Canyon National Park, Arizona