Near Castleton, Peak District

I've been asked where exactly the scene is for this painting of the Peak District.

Near Castleton, Peak District (Oil on linen, 12 x 12)

I climbed a hill next to the car park at the Speedwell Cavern on Arthur's Way.  Here's the hill on Google Maps here.

The view is looking out over the valley (seen here behind the car park).  Castleton is down on the right.