Nambung National Park, Western Australia

February 23, 2017

Australian Pinnacles (1)

Photographer: George Seielstad
Summary Authors: George Seielstad; Jim Foster
The pinnacles in Australia's Nambung National Park are primarily limestone outcroppings richly endowed with such marine organisms as corals and mollusks. During the early Pleistocene, the sea washed sand, coral, microorganisms, etc. onto the Pinnacles Desert, which over tens of thousands of years formed limestone. Eventually, wind and rain eroded all but the most resistant rock, leaving behind these remnant pillars. It should be pointed out that the exact manner of their formations is still being debated. The tallest pinnacles here are about 10 ft (3 m) in height. Photo taken on February 8, 2004.

Photo Details: Nikon camera; Nikkor 70-210 mm lens; Fujichrome Velvia 50 film at ISO 40; 210 mm focal length; 1/4 sec. exposure; f/22.

Thanks to all who voted for their favorite EPOD of 2016!
The results of the voting may be seen here.