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Borderlands Glitch - Scorched Snake Canyon Original Video (CNRR)
This is the original recorded video showing how to get up there.
I'm not sure if it's really a glitch, but you can get to it.
Shortly after killing Steele-trap, you can jump on parts of the wall and up onto the cliff. I know the other videos show people using grenades to get up there.
Just some buildings up high in the canyon, no chests hidden there unfortunately.
You can jump through the buildings and part of the crane.