Charlie Duke (left), John Young, and Ken Mattingly pose with a training version of the lunar roving vehicle in a field at the Kennedy Space Center simulated to represent the lunar surface.
NASA
Taken on 2 March 1972
<a rel="nofollow" class="external text" href="https://www.hq.nasa.gov/alsj/a16/images16.html">Apollo Lunar Surface Journal (page, search for KSC-72PC-133)</a> <a rel="nofollow" class="external text" href="https://history.nasa.gov/alsj/a16/ap16-KSC-72PC-133HR.jpg">(image)</a>