The Laacher See is a volcanic caldera filled with water, located in a protected landscape in the mountains of the Voreifel near Andernach at a distance of approx. 60 km from Bonn. It is the largest lake (3,3 km2) of Rhineland-Palatinate. The oval lake, surrounded by a high wall covered with trees, has a depth of 53m and is nearly exclusively fed by groundwater. The lake’s water is very cold and light blue in color at sunshine. At the bottom of the water in the western part of the lake the wreck of a British Halifax-bomber which crashed here in 1942 was found. Due to the danger of an explosion, since March 2007, boating, diving, fishing (except professional fishing) and swimming, is no longer allowed in this area. Nevertheless the Laacher See, which belongs to the Benedictine monk abbey Maria Laach, is a worthwhile recreation area to swim, sail and walk. Visitors can stay at the large, modern camping (Laacher See) located at the border of the lake or, if a bit more comfort is desired, in the 4-star Seehotel Maria Laach.