Jum or Jump?

A place we've heard about for years, but my swim buddies had never swum here at Buckstones Jum (or on some maps Jump) above Rydal.  You can just see the small waterfall in the photo, beside the pool and tiny pebbly beach. We picked a good day, with no-one around to hear three ladies of a mature age giggle as they lay in the tumbling water for a jacuzzi.  (Some youths later appeared and jumped off the larger rocks into the pool, but that wasn't our style.)