Going back to the initial reference, Canals of Mars, one of the landscapes scenarios is
A = The mars landing (Mars currently)
B = Mars in the future (Mars settlements etc) answering what are the canals we saw on Mars
For the model I am taking from this: the rover, rocky dune-y landscape, domes space-like structures.
This is Mars’ landscape as photographed currently from the Rover
And these are artist impressions of the first steps of Mars colonization, project Mars One (Volunteers for a one way-ticket leaving in 2036 wanted btw). Also shown a more futuristic vision of terraforming, completely changing the landscape and atmosphere, Mars.