We visited an old limestone quarry.Where all the folks are standing was a limestone deposit. This was mined in 1906 and used to make concrete in the rebuilding of San Francisco after the earthquake. |
Nate exploring one of the little caves. |
Nate had some fun, but was also a little bored on the hike. |
Here are all the scouts lining up for a photo shoot. |
The miners would drop the limestone into a cave where it was captured on a rail cart and hauled by train to SF. They've since gated the entrance to the cave. |
Inside the cave, you can see it's well worn. It wasn't boarded up until 2006. They discovered lots of fossils in here, dire wolves, giant sloths, mastodons etc. |
http://members.psyber.com/asra/tgquar.pdf
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