24 Oct 2010

Jet stacks.

The beach hereabouts was a good source of jet (fossilized monkey puzzle trees) and was extensively quarried in the past. This is what happened when the miners came across a lump of harder rock in the jet shale: they quarried around it, extracting as much of the jet-rich shale as was safe, leaving these stone mushrooms, shown with the blogdog for scale.

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