those so called tubes are so OBVIOUSLY convex..and clearly not possibly concave and those "arches" (not dunes) follow the shape and form of the rest of the tube..


One can open their eyes..but they cannot see if theyre blind.

Most people dont have to look hard to recognize these as TUBULAR shapes. NASA however is trying to claim it is a magical "trick of light" which, i admit, does happen rarely in aerial imagery. HOWEVER this tubular shape is supporting not only by THIS one main image but also by some 8 or 9 other images taken at different times and with vastly different lighitng conditions over different areas. This removes the chance of NASA's trick lighting completely.


HERE is one portion of one such image.
Care to argue with THIS being DUNES and not a tubular shape?

http://www.geocities.com/marsunearthed/tubes/stained_vent.jpg

Source URL for this image:
http://www.msss.com/moc_gallery/ab1_m04/images/M0201270.html