I went back and looked at the pic of the goat and the angle of the terrain. I would say where the goat is at that point is 45 degrees. This was a "flat" part and the part where the goat stopped rolling down. You're right about not being able to see the goat. The only time I could see him was when he was right at the edge. If he stepped back a foot or two he would disappear. Again, was it 70, maybe not. Was it 45, don't think so. The actual angle was probably somewhere in between. Truth is it doesn't really matter.