I travelled to the village at the bottom of high hrothgar. I jumped into the river next to the village and let the current take me. After falling hundreds of feet I stopped halfway down my rapid decent. I was suddenly attacked by a dragon. I killed him on the edge of a drop and for the final blow I Fus Do Rah'd the dragon off the cliff and he fell down into the pool below. I jumped in after him and dived under the water and absorbed his soul underwater. I then let the remains of the river take me where it may. As I travelled through the rift, it turned to nightime. The most beautiful sight I have ever seen in Skyrim or any game; the aurora spanned the night sky it was red,blue,orange and green. It was the best one I had ever seen I just drifted for 10 minutes, just staring at the sky while passing through the beauty of the rift. By the time I had finished, the river had taken me to windhelm and I was still looking at the sky.