There is one place named Porphyry Hill in Australia.
All places in the world called "Porphyry Hill".
Gladstone (5)
Hamilton (5)
Kingston (5)
Richmond (4)
Gordon (4)
Windsor (4)
Newstead (4)
Cremorne (4)
Springfield (4)
Darlington (4)
Woodstock (4)
Rosedale (4)
Clarendon (3)
Derby (3)
Epping (3)
Georgetown (3)
Melrose (3)
Auburn (3)
Rosebery (3)
Waterloo (3)
Bangor (3)
Buxton (3)
Clare (3)
Mosquito Creek (3)
Spring Hill (3)
Brighton (3)
Homebush (3)
Stratford (3)
Bald Hills (3)
Inglewood (3)