Today's photo, 'Calanscio Vibroseis' shows our seismic line stretching out from one set of dunes and across a plain towards another distant dune line.
On this survey we were using four Failing Y1100 vibrators mounted on International 6x6 trucks as our energy source. In this photo you can see the four vibrators shaking the ground and carving their way through the maize. In the foreground a spare fifth vibrator sits idle, ready to go to work if one of the other four breaks down. In the background are the Schoonspruit/Skoonspruit grain silos.
After Heuningspruit we found ourselves camped near Bultfontein. This was almost certainly taken with my Tamron 500mm mirror lens as my records show the next longest lens I owned at the time was a 300mm.