Gruta do Natal
Gruta do Natal ( "Christmas Cave" ) , also known as "Galeria Negra" or "Gruta do Cavalo" , is a cave system in municipality of Praia da Vitória , on the island of Terceira in the Portuguese archipelago of the Azores . 
<triplet> Gruta do Natal <subj> cave <obj> instance of <triplet> Praia da Vitória <subj> Azores <obj> located in the administrative territorial entity <triplet> Terceira <subj> Azores <obj> located in the administrative territorial entity <triplet> Portuguese <subj> Azores <obj> contains administrative territorial entity <triplet> Azores <subj> Portuguese <obj> country