S71-24079 (1971) --- Astronauts Richard F. Gordon Jr., right, and Harrison H. Schmitt ? back-up crew members for the Apollo 15 lunar landing mission -- traverse in an Earth-bound training version of the Apollo Lunar Roving Vehicle (LRV or Rover) during geology training in Hawaii. Photo credit: NASA Note: There are elements of this description that have not been confimred. Please hold any release of descriptive information until such can be confirmed.