Weißer Stein (Eifel) 2007 the University of Liège executed measurements and found a height of 692 m (TAW, Belgian standard). The altitude meter of Google Earth caused some doubt about Signal de Botrange (694 m TAW) as Belgium's highest point because its vertical reference EGM96 deviates a couple of meters from the German Normalnull and the Belgian TAW, thereby suggesting an altitude of 701 m for the Weißer Stein. An accurate control by the Belgian National Geographic Institute in 2010 showed the Weißer Stein to be at maximum 693.3 m TAW (=691 m NN), with which it differs by less than 1 m
Mount Tianzhu Mount Tianzhu Tianzhu Mountain or Mount Tianzhu () is a mountain in Anhui, China. Tianzhu Mountain is also called Mount Wan (), from which the provincial abbreviation for Anhui ("Wan") derives. Ancient names of the mountain include Mount Huo 霍山, Mount Heng 衡山 (not to be confused with Mount Heng in Hunan Province), and Taiyue 太岳. The mountain is located in Qianshan County, Anqing City. Tianzhu Mountain has 45 peaks which are 1000 metres above sea level. Its highest point has an elevation of . There are two paths to reach the top, either from the east or from the