I was the passenger of a Land Rover that went into and out the other side of one of these ditches on the Stanley to MPA road. The wagon ended up on its roof a fair distance away from the road. You are right, it does hurt when the go in. For info, It also hurts when they come out again and when they stop. And when you undo your seatbelt and fall out of your seat and crack your head on the metal spar that runs across the roof of the Landie. I don’t recall it hurting when I crawled out to the back door as I couldn’t open my door, as the passenger side took a lot of the impact of the roll. My collar bone smarted quite a bit once the adrenaline wore off and it also creaked quite loudly when I moved my arm.
We were lucky as i came away with cracked collarbone, broken rib and glass in my skin on my arm and head, the driver was just battered and bruised but didn’t break anything. It could have been far worse. Unfortunately I don’t have any pictures of the wagon upside down in the bondu, or how twisted it was once recovered.
RP