When SpaceStarship lands Mars, the crew will be almost 50 meters above the surface. How will they get out with all their equipment?
The design hasn't been confirmed publicly by SpaceX yet, but probably some kind of elevator. One of the mockup drawings showed Starship having a stowed crane for offloading cargo, so it wouldn't be unreasonable to assume they could stick a flat platform with handrails on that.
Picture at 33s into the video:
It would seem elementary to be able to move cargo out of the ship, but it is a technical problem of moving and storage. It occurred to me that besides having a modified gantry lift and automatic machinery as a main moving mechanism, there needs to be manual mechanics to be a backup system. Also, since gravity is so low perhaps a circular slide filled with air would do the trick, winding it's way down to the floor of the Mars surface. Passengers could help unload the cargo bay on top, while others on the ground receive the cargo. Furthermore, there also could be a useful cargo mover, circular, something like those used to move luggage in airports with chain links. It would have to be something simple, because everyone on such a long trip, with all of the hazards involved with their body, may not have the strength or the inclination to move cargo.