Ground Effect,
The photo was taken in the eighties.
Yes I have been to the Hindenburg Wall. We went to film it for an American company. It was a very scary experience as you approach it. From a distance it looks quite ordinary but as you start to get within a few miles the sheer cliffs start to get very, very big and you start to get a bit apprehensive. You have to keep an eye on your airspeed as you tend to slow right down as the rock face looms over you.
It is quite an experience to fly along the rim and see all the petrified trees.
When you take off from Tabubil at 1500 feet you stay on climb to 11,000 feet and the sheer wall drops for about 4000 feet??, (it looks like that). It makes you feel just a little insignificant in the scheme of things. The cameraman nearly had a heart attack when we went over the edge at speed, from 50 feet agl to 7,000 feet in a second certainly made you sit back in your seat, a great thrill ride.