The ancient Kepzyrs built temples on the moon in the 29th century.
In the 109th century the moon was supposed to be a thriving mid-level civilisation. The actions of Frank Reade Jr turned it into a wasteland by this time. There were no mountains or valleys, no oceans or continents. The only thing in the atmosphere was slight traces of nitroglycerin, dating back sixty centuries. (PROSE: Frank Reade, Jr.'s Electric Time Canoe)