I have wondered about the great rift valley on Mars ... it that region was once oceanic and civilization was thriving on Mars, when water flowed the last epoch on Mars it must have dumped a whole lot of 'stuff' in the floor of that rift. I envision the floor of the rift to be a dust covered massive junkyard. Where are the detail pictures from flyovers of that valley? NASA has detailed photos of every square yard of the Martian surface, what have they seen in the valley pictures? ... Ya think Hoagland will go in that direction with his future conspiracy theories?
There are lots of Internet posted pix of the Martian surface but I have yet to see anyone pouring over the pix that would reveal what might be on the floor of that great rift.
I envision the floor of the rift to be a dust covered massive junkyard Possibilities are endless. Would love some exploration in several regions of Mars and knowing information releases are truthful. If exploration has been done of highly probable areas where life may have been supportable at one point, nothing is being said to the public that am aware of. Facts are elusive.