Place name Sidogou location, Pinggu District, Beijing, Huangsongyu Village, Huangsongyu Village Shilinxia tourist area one kilometer south, on the side of the mountain side of the district level road, under the road Huangsongyu Reservoir reservoir surface, to the south 1.3 km to the Huangsongyu Reservoir Dam, the dam is flanked by the ancient Great Wall, 5 km south is the famous Jingdong cave, southeast 10 km is Jinhai Lake, 1.5 km north is the Shilin Gap Scenic Area, in the way to Bei Baiti Mountain House, Gold Rush Valley, DayYunshan scenic area, this is the tourist belt throat fortress, is a national forest park in which it still plays walnut base, and is the country's good quality wild text play walnut base, the country's big wild text play hemp walnut base, famous wild yuan walnut is produced here, with the intention of the people.