Tresticklan National Park is located in the municipality of Dals-Ed in northwestern Dalsland, Sweden, along the Norwegian border. "Trestickel" means "trident", possibly a reference to the shape of Lake Stora Tresticklan. This national park contains one of the few remaining areas of pristine forest in southern Scandinavia. The park was established in 1996 and has an area of 28,97 km².