Barnafoss is also known as Bjarnafoss, which was its previous name. Barnafoss is near Hraunfossar which burst out of Hallmundarhraun which is a great lava plain. Barnafoss is a waterfall in Western Iceland, about 100 kilometres (62 mi) from Reykjavík. Barnafoss is on the river Hvita in Borgarfjordur.