No where near the size of the Madagascar markings, but both run from NW to SE. To me they are evidence of a Tsunami possibly created from the subduction zone off of Washington or maybe an alaskan earthquake.
Dang, I was at Guadalupe Dunes three weeks ago. Would gone to the visitors center to look it up had I known. Thanks.
Thank you!!! Now I just need a trip.
:-)
Sincerely, Thanks!