Yup - I used to use http://www.fourmilab.ch/earthview/ which is also tied to the NOAA site you showed, but the Wikipedia one shows the Athena/Zeus connection better.
Just can't figure out where all the water would've gone though IF (and it is a really big IF) its what actually showed. Or for how long it would have been lowered like that.
It does kind of tie things together in a neat bundle but the devil's in the details like they say.
Unless the whole ocean was frozen and they mapped the ice surface???
Food for thought, I guess.
A Forgotten World
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