Mynydd Twyn-glas
Mynydd Twyn-glas is a sprawling 472-metre-high mountain extending into Caerphilly and Torfaen county boroughs in South Wales . 
<triplet> Mynydd Twyn-glas <subj> Wales <obj> located in the administrative territorial entity <triplet> Torfaen <subj> Wales <obj> located in the administrative territorial entity <triplet> Wales <subj> Torfaen <obj> contains administrative territorial entity