Upper Flood Swallet
Upper Flood Swallet which was originally known as Blackmoor Flood Swallet , is an exceptionally well-decorated cave near Charterhouse , in the carboniferous limestone of the Mendip Hills , in Somerset , England . 
<triplet> Upper Flood Swallet <subj> cave <obj> instance of <triplet> Mendip Hills <subj> Somerset <obj> located in the administrative territorial entity