Found it on youtube.
[video]https://www.youtube.com/watch?v=Cy61pG8P4AY[/video]
Once you cross the boundary at the top of stony climb, you can go left or right. Left is more pumpy, i actually prefer right.
a couple of people are listing videos of another section as rollercoaster; also on the Old dean common bit, but instead going from near-ish the clubhouse – linked vid shows the rider going through the fence by the top of the climb. But that’s not waht i’d call that trail……
[video]https://www.youtube.com/watch?v=RT-4QgixNns[/video]