Damaged "machinery" in the upper left portion of the frame is augmented by more parallel "plumbing" in Melas Chasma. Note the sharp relief of the cliff walls and debris left over form the collapse/upsurge of the plates. Almost total lack of erosion of these features indicates an extremely young age for these features -- probably 3 million years or less. Note rippling "shockwave" in lower plate, indicating the stress induced by the shear upward (or downward) rifting of the plates. Tubes appear to be exposed by flow process -- probably water -- on lower plate.