Some years ago I was working on a seismic survey crew in Oman. The area we were surveying was in the south and near a large airfield (I think it was one of the emergency alternative landing sites for the space shuttle). The area was also used by the RAF for low flying exercises. The terrain was a series of wadis and jebels (valleys and hills), about 50 metres elevation difference between highest and lowest points with the wadis being anything from ten metres to 200 metres in width. A map of the area looked like someone’s intestine.
One lunchtime the local crew who laid out all the recording cables were sat having lunch on the wadi floor and I’d walked up to the top of the nearest jebel. I was probably 100 metres horizontally from them and 50 metres higher. There was then a noise of a jet engine. It was getting louder but I couldn’t see anything. Still getting louder. Then two Tornadoes appeared following the route of the wadi and passed between myself and the crew. Not as low as some of the shots posted above but they weren’t travelling in a straight line over open ground.
Back in the 1970s and 80s when the RAF followed predefined flight paths in the UK for low flying practice we happened to live under one of them. Since the farm was on top of a hill, let’s just say they skimmed over things before dipping back down into the valleys. Looking down into the cockpit of a Vulcan as it flies past is interesting. There were several instances of aircraft tails striking power lines and the wash from the engines knocking dry stone walls down.