totient: (mosaic 5)
phi ([personal profile] totient) wrote2011-03-09 05:24 pm
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what's this

What's this? And what's so interesting about it, anyway?

Answer in the comments.
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ceo: (Default)

[personal profile] ceo 2011-03-09 10:34 pm (UTC)(link)
Pinopolis Locks. It's the highest single-stage lock in the US and second-highest in the world, at 75 feet.
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