But how could that be, Mars has insufficient atmospheric pressure to allow liquid water to exist .. it must be something else hydrocarbon - oil - comes to mind. NASA Link.
Pim says, "Given the almost complete lack of any reflected highlight, Im saying that isn't a liquid at all. Liquid is shiny. The fact that the ground slopes noticably would say that if it's liquid it would be very viscous. It is almost certainly dark sand or rock. You can even see the texture."
TankTinker -1 points 9 months ago
THC103 says, "Quite obviously sand."
Pim says, "Given the almost complete lack of any reflected highlight, Im saying that isn't a liquid at all. Liquid is shiny. The fact that the ground slopes noticably would say that if it's liquid it would be very viscous. It is almost certainly dark sand or rock. You can even see the texture."