Gravity seemed a bit strong considering it should be 1/6 Earth.
Also I noticed a flag waving in the breeze. Breeze? No air on the moon.
Also, without air there probably wouldn't be any sound except your own breathing, but that might be distracting. In Halo 2, sound was muted a bit when outside. Perhaps you could do something similar.
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Maybe the traveler did something during the Golden Age?