In college there was a popular waterfall that had a 50ft drop into a shallow pool, then another 25ft drop into a much deeper pool, which was a pretty popular hangout. One day we hiked to the bottom with our cooler full of beer and it was a typical weekday, absolutely packed with people skipping classes or whatnot and drinking at the bottom of the falls. Found a spot on the nearby rocks, set our blankets up and I jumped in the bigger pool at the bottom and swam up and then climbed up the side rocks to the more shallow pool as that was my preferred spot to sit. Just enough water to keep ya cool.
Right about the time I got to my normal spot, I look up and see two guys up top next to where the larger falls comes over the top ledge. One of them was sitting and the other guy had what looked like a bottle of liquor he was drinking from. He chugged a bit, handed it to the guy next to him, and goes to sit down. His feet slipped, he sat down hard on the rocks and started sliding towards the drop off. I can still vividly picture his arms flailing wildly as he was trying to grab something, anything and as the realization of what was happening to him set in. All he could manage to get out, was a blood curling "HELLLLLPPP". As he was going over the edge, he managed to turn onto his belly trying to grab a hold, but it didn't matter, everything was soaking wet, and you're not grabbing onto those rocks up top. He shot off the ledge, more or less bounced off the first ledge, much further then I would imagine, enough that his body missed the shorter ledge directly below where he was falling. Unfortunately, his face did not. His head slammed into the lower ledge, and immediately his body went limp. I can still see his limp body bouncing off the rocks as he fell the rest of the ~40 ft.
He landed in the shallow pool less then 10 feet from me on his side. Immediately the water around him turned an almost crimson color. I ran up to him and the left side of his face was caved in. His whole cheek and bottom of his eye socket looked like someone had hit him with a baseball bat and just crushed his whole face. His left foot was turned completely backwards. And was hanging limply. His mouth was in the water and all I could think was, so this is what watching someone die a horrible death looks like. I knew immediately he was dead, but saw his mouth and nose were in the water so I reached down and lifted his chin just enough to get his mouth out of the water. To my amazement he somehow exhaled. And then he screamed. I called out, "somebody call 911". About this time some lady came charging in,
"everybody move, I'm an Army Medic". She asked me to help stabilize his neck as we rolled him onto his back. After we flipped him over, I backed away and let this lady take over. Medics arrived after that, and they life-flighted him to a nearby hospital.
I learned sometime later that the guy survived. Most of the left side of his face is replaced with a plate, as well as lost the vision in his left eye all together. Even knowing that the guy survived, it was easily the most horrible thing I witnessed. Hearing him scream and watching his body go limp as his head smashed into the side of the fall is a sound and an image I don't think I'll ever be able to forget.
This is the falls we were at:
http://puu.sh/iilCM/3f9c3e1c5f.jpg