Since legend indicates that Atlantis sank in one night (possibly by tsunami), this is relevant in that it looks like the tsunami went inland 60 miles.
There was a new National Geographic Channel special on Sunday "Finding Atlantis." I don't know if there is an archive copy available.
http://news.yahoo.com/s/nm/us_tsunami_atlantis;_ylt=A0wNdNhWv3tN6QwBk1ms0NUE
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In the mud flats of Spain....guess I am part Atlantian :)