flickr rocks

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(via Le tigre de Sibérie | by Rock Arsenault | Flickr)

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(via [16861] Nottingham : Castle Rock | by Budby | Flickr)

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(via CRIP LWT12 2 WB Englewood Union Station Chicago IL 04 21 6… | Flickr)

Rock Island Aerotrain at Englewood Union Station

Chicago

April 21, 1964

Photo by Marty Bernard

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Gneiss Beach by Seán Kerr Photography
Via Flickr:
Lewisian Gneiss rocks on Tràigh Mhòr (Big Beach), Isle of Harris. These rocks are some of the oldest on earth at three billion years old.

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Woodhead waterfall by Andrew Kearton
Via Flickr: