premise: The early manned missions visited lowlands and plains while the later missions explored highlands. Selecting a suitable site was never going to be easy as even the apparently flattest of locations were found to be on closer inspection potholed from meteorite strikes and plastered with small boulders. The moon is rugged and very mountainous and in the 1960s a number of lunar probes had photographed the moons surface during close orbit passes and even performed soft landings in the search for suitable sites for the manned missions that were to follow. In 1969 Neil Armstrong and Edwin Aldrin in Apollo 11 made the first ever manned lunar landing. The last manned landing was made in 1972 with Apollo 17.
hypothesis: Apollo 17 visited a mountainous region of the moon.