51.9 meters. According to the query of Bozhou Information Network, Baitu Mountain is located in Dingtao District, Shandong Province. The top of the mountain is now Cross Street, commonly known as Dagushou, with an altitude of 51.9 meters. According to the Records of Cao Nan's Literature, the ancient appearance of this mountain is "ups and downs, eight or nine feet high and several miles across". According to the existing relics, taking this mountain as the peak, * * * five hills are arranged in the east and west (one to the east and three to the west of Baitu Mountain). Because the Yellow River has burst many times, the earth and mountains under the mountain are silted up.