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    Re: An interesting question
    From: Don Seltzer
    Date: 2013 Oct 13, 08:01 -0700

    Brad Morris wrote:
    One obvious candidate is the Bonneville Salt Flat. Herein find the description of the surface
    ...
    I read that to be an elevation change of (at most) 16 feet over 10 miles, which works out to just over 1 arc minute. This spot would work nicely.

    --
    Perhaps in selected directions. However, much of the horizon is dotted with distant mountains.

    Don Seltzer
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