We have so many operations there right now Phoenix, Spirit, Opportunity, Odyssey — can you believe it? The bodies of old missions like Pathfinder all the way back to the Viking missions that got my imagination all fired up as a kid… Mars is littered with Earth technology.
If there is water on Mars, perhaps life will arise there (again?) in the future as the sun heats up; maybe even intelligent life. What will they make of these objects? Will they assume they are geological anomalies and try to study them from that angle? Will they ridicule or castigate the one guy who proposes that maybe it’s alien technology?