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    Re: Illinois drainage
    From: Frank Reed CT
    Date: 2005 Nov 22, 21:08 EST

    Gary LaPook wrote:
    "Chicago is as flat as a  pancake because the land used to be the
    bottom of  Lake Chicago.  "
    Which reminds me of something funny about Chicago...
    In Lincoln  Park on Chicago's north side, there are a couple of small hills
    (about 10 feet  and 30 feet high). If you make the difficult ascent up one of
    them, pausing  every now and then to acclimate yourself to the decreased
    oxygen, at the very  summit you will find a marker, surrounded by drifting snow even
    in the middle of  summer , that explains in geological terms exactly WHY
    there is a hill  there. A hill needs an explanatory marker?? Now that's flat!
    For people  practicing sextant sights, a flat city has one interesting
    advantage. Rows of  streetlights extend straight as an arrow into the distance, and
    if you extend  them visually they can indicate the location of the horizon to
    within a few  minutes of arc.
    42.0N 87.7W, or 41.4N  72.1W.

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