File:PSM V49 D022 Map of the whirlpool ravine.jpg

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Description Map of the whirlpool ravine
Date
Source Popular Science Monthly Volume 49
Author Unknown authorUnknown author
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This is a retouched picture, which means that it has been digitally altered from its original version. Modifications: Extracted image from book, to grayscale, cropped whitespace. Modifications made by Ineuw. The original can be found here: Popular Science Monthly Volume 49.

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current10:07, 29 March 2011Thumbnail for version as of 10:07, 29 March 20111,010 × 451 (125 KB)Ineuw{{Information |Description = Map of the whirlpool ravine |Source = [http://www.archive.org/details/popularsciencemo49newy Popular Science Monthly Volume 49] |Date = 1896 |Author = Unknown |Permission = {{PD-old}} |ot

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