yes, that’s a little bit steep, but the one I’m thinking of is a little harder to describe, but here goes:
If you at the fence of the reservoir beyond the gully and then ride as if heading towards the wall etc, there is a steep forest road to your left (ignoring all of the great singletrack to your right). At the bottom of the hill, at the first crossroads there is a little track on your left which winds back up towards the reservoir, it levels out and then kicks skywards! Loose, pine needle covered, soft and roots too.
I can think of no better challenge