The Svartifoss waterfall as viewed from a trail in Skaftafell National Park. Known for the Basalt columns that line the back of the waterfall. View of Midfell in horizon.
from site: Þingvallavatn is a lake in south-western Iceland. With a surface of 84 km² it is the largest natural lake in Iceland. Its greatest depth is at 114 m. At the northern shore of the lake, at Þingvellir (after which the lake is named), the Alþingi, the national parliament, was founded in the year 930.