The site of Gaxiandong is located 10 kilometers northwest of Alihe Town, Olunchun Autonomous Banner, Hulunbuir City, Inner Mongolia Autonomous Region. The site of Gaxian Cave is a natural large mountain cave. The cave entrance is on the cliff of the mountainside, 25 meters from the surface, and the water behind the mountain faces the cave entrance to the southwest. The cave is 120 meters long from the north to the south, about 28 meters wide from the east to the west, and the dome is more than 20 meters high. The site of Gaxian Cave found stone inscriptions Zhu Wen, unearthed pottery, stone, bone, wood, copper, iron, jade, and found three deer-printed gold ribbon decorations, gold earrings and so on. The pottery unearthed at the Gaxiandong site is mainly pottery pottery, belonging to the Warring States period, mostly hand-made black-brown sanded coarse pottery, a few are wheeled fine clay pottery, pottery with more marks, and also found a pot full of grains; The stone tools unearthed at the site of Gaxiandong can be traced back to the Mesolithic Stone Age, with stone scales, stone spears and scrapers. National key cultural relics protection units.