Not exactly overhead.
Hi Nathan!
Those pics of Mars may have had a similar angle of view as these (of course taken at a higher elevation):
Aerial view of ice lake:
http://www.oakland.edu/boatnerd/news/newpictures/sarnialayup-1-8-01-dc.jpg
Aereal view of thawed/liquid state lake:
http://www.oakland.edu/boatnerd/pictures/coles/fawnisland-westview-air-5-5-01.jpg
Those closely coincided with the shadows on the Martian pic.
Marcia
