(Before It's News)
Quite a few “door handles” were imaged by NASA’s Mars rover Curiosity. They are actually the fossilized remains of processes (note 1) on an animal’s vertebra as shown in this photo:
Source of image: Print-screened from the center of this panoramic image:
Location: near “John Klein” rock in Yellowknife Bay, Gale Crater.
Note 1: See vertebral processes on human spine