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General Climbing Discussion

Topic Date User

buying boulders 25-Jun-2013 At 10:30:25 AM Ashfall tuff

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On 25/06/2013 pmonks wrote:
>Heaven forbid I start channeling ODiousH, but given the likely cost of
>moving a couple of hundred tons of rock a hundred kms or more, why not
>just build a home climbing wall? You'll get much more variety out of it
>than a static block of stone (unless you have a chisel in your rack)!
>
>Oh and geology is freaking awesome, particularly if you live somewhere
>with geological variety. Within an hour's drive of SF are crags with the
>following rock types:
>* radiolarian chert (climb 10m and you've traveled a million years in
>time!)
>* rhyolite (viscous slow moving lava!)
>* greywacke (a solidified underwater avalanche!)
>* schist (traveled 50km under the ground then popped up like a cork!)
>* sandstone (40 million year old sandy sea floor!)
>* volcanic breccia (the most fun choss climbing you'll ever experience!)
>
>Even the story of how they all ended up so close together is great!

Where is SF?