Sprengisandur highland road connects South and North of Iceland and is only open during the summer. In winters the road is closed due to snow and floods in springs. Sprengisandur is an ancient horse trail and is pretty much a desert with black lava sand. The trail lies between Hofsj÷kull and Vatnaj÷kull glaciers. If the weather is good the trail offers magnificent views of both glaciers as well as Askja and Herubrei volcanoes.