Storm approaching Petrified Forest National Park Arizona. Viewed from Whipple Point.

Whipple's penstemon (Penstemon whippleanus), Gunnison National Forest, Colorado, United States of America, North America

Whipple's fishhook (Sclerocactus whipplei) bloom, The Needles District, Arches National Park, Utah, United States of America, North America

Whipple's fishhook (Sclerocactus whipplei) bloom, The Needles District, Canyonlands National Park, Utah, United States of America, North America