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Don Nelsen - Mar 13, 2007 4:18 pm - Voted 10/10
Nope,not always, but often enough to be entertaining. BTW, what do you make of that benchmark-on-a-pole? I was wondering if the ground has eroded that much since it was placed or if it started out on a pole for some unknown reason - I'm leaning towards the erosion theory.
dn
Klenke - Mar 14, 2007 6:39 am - Hasn't voted
Yep,I've seen several benchmarks on a pole in my time (examples: Gypsy Peak in NE WA and Larch Mountain in the Capitol Forest). I don't think it's erosion exposing more of the pole, although Mauna Kea is known to be getting shorter. 500,000 years ago it was 3500 feet taller than it is today. I think poles are used when no suitable rock is available to stamp the benchmark onto.
I put up this lava page tonight with pictures. Have a look.
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