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SAHARAN LAKEFRONT

At perhaps its greatest extent, the Tushka lake would have covered more than 68,000 square kilometers (shown in false color topographical image at left). At other times (right) less water would have flown into the low-lying basin from the Nile (visible on the right in both images), causing the lake to shrink. Red corresponds to an elevation of 400 meters above the basin floor. Credit: T.A. Maxwell et al/Geology 2010

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  • Looks like a lake with no outlet. Would it have been salt?
    Brian Hall Brian Hall
    Nov. 28, 2010 at 9:01am
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