This is a shot of the R719 and the railroad that runs parallel to it about 18 miles south of Bothaville in the Free State, a couple of miles south of our camp at Schoonspruit/Skoonspruit.
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.
In this case a storm rolls by to our north with lightning forks illuminating the surrounding skies. You can even see a lightning trail within the cloud. Off in the top left corner, the moon attempts to shine through the clouds.