On board of the Apollo 15 Lunar Module [Falcon]: a few customized Hasselblad EDC (Electronic Data Cameras), medium format cameras that produced numerous images of the astronauts, the Lunar Module [LM] and the Lunar Rover (LRV).
The Apollo 15 mission was designed to obtain the most extensive quantity and variety of photography of any mission thus far. There were several different varieties of photographic equipment, both on the surface and in orbit. The camera equipment operated on the lunar surface or in the LM by astronauts Scott and Irwin included three 70-millimeter Hasselblad Data Cameras, a 16-millimeter Data Acquisition Camera and a color TV camera or Lunar SurfaceTV camera. The main photographic tasks during orbit were performed with the Mapping Camera System and the Panoramic Camera, which were in the SIM bay. Various tasks were also accomplished using four command module cameras: a 70-millimeter Hasselblad electric camera, a 16-millimeter Maurer DAC, a 35-millimeter Nikon, and a Westinghouse color TV camera.
Hasselblad photo 11471 shows a small strange-shaped boulder just in front of the right rear wheel of the Lunar Roving Vehicle (LRV). That strange rock was often retouched on duplicates of both photos for graphic purposes. Only God knows why. Or was it just an ordinary studioprop that had to be removed?