Brimstone Question

I have a question for those that know the Brimstone area. It has been about 5 years since I have ridden there and I’m trying to figure out the trail / trail head that we used to get to a pretty nice lake. If memory serves me correct, we parked on the side of a road next to a river and the trail was a stair step of rock to get up to the lake. Attached is a picture of the lake that I am talking about. If anyone happens to know this trail or where the area is that you park at to get to this lake, I would greatly appreciate it. I can’t remember how to get to the area that we parked at. I’ll be down there at the end of this month and wanted to ride the trails where that lake is. Thanks in advance.