We'll be in Braithwaite for a few days in July (possibly before English schools finish). DS (13) would like to climb a mountain. We did Ben Arthur a couple of years ago (884 metres (2,900 ft)). Knackered afterwards but it wasn't beyond us. Any recommendations? He will not be fobbed off with Cat Bells, it is not a mountain and he will figure this out as it won't take long enough.