贺兰山
The Baisigou Square Pagoda was situated in a remote location in the Helan Mountains, about 10 km from the nearest road. On 28 November 1990 a local peasant discovered that the pagoda had collapsed in ruins; subsequent investigation revealed it had been blown up by unknown criminals, apparently with the intention of stealing any historical relics inside the pagoda. In August of the following year an expedition led by archaeologist Niu Dasheng (牛達生) (b. 1933) from Ningxia Museum carried out archaeological investigations at the site.