The British Geological Survey presents the National Archive of Geological Photographs – Themed Galleries – something to ooooh and ahhhh over, to be sure! I thought the Photomicrographs – thin sections of rocks and minerals – were especially cool. (Thanks to Barbara for the link!)

And speaking of cool photos, tom has a set of five up right now (subject to change) from a visit to a lighthouse that are not to be missed. 🙂

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