NASA Telescope Pictures Show Tree-Like Images
Actually, these are sand-dunes, but look very much like trees or fences on Mars.
Trees on Mars? Some of the latest photos from NASA show what appear to be lines of trees, but are actually small landslides in the Martian soil and Carbon Dioxide Snow.
(Images from NASA/JPL/University of Arizona)
While these look like trees, they are actually grooves in the side of dunes caused by small landslides. The dark colors just help them stand out more.
Notes and Special Information
Special note: No evidence of real trees has been found on Mars. Similar to the Face on Mars, things are not always what they seem when viewed from telescopes.