Hi @lemouth!!!!!!
The Apollo XI Cave site is quite a significant archaeological site located in Nambia. The site contained some of the earliest mobile art pieces in the form of 7 stone slabs with artwork done in charcoal and ochre dating back to between 27 500 - 25 500 Before Present. So it wasn't only Leonardo da Vinci that carried around the famous "Mona Lisa". But I am sure that the name of the cave "Apollo XI" is what caught your attention:)
While the German archaeologist Wolfgang Erich Wandt was working in the cave the Apollo XI space mission had just made their successful return to earth on the 24 July 1969 after landing on the moon, so Wolfgang named the cave after the mission.
Thank you so much for the support and comment:)