Dimmuborgir
Dimmuborgir ( "dimmu" "dark" , "borgir" "cities" or "forts" , "castles"; pronounced ) is a large area of unusually shaped lava fields east of Mývatn in Iceland . 
<triplet> Dimmuborgir <subj> lava field <obj> instance of <triplet> Mývatn <subj> Iceland <obj> country