2000年和2011年,对陕西周至县八云塔地宫进行清理。地宫上层为方形砖室,下层为地宫。地宫平面为方形,直壁,四角攒尖顶,南壁正中有券洞式甬道,甬道内有三道封门。地宫内出土石函、石棺、汉白玉佛龛造像和钱币等。根据地宫形制和出土遗物等推断,八云塔及其地宫始建于唐代,北宋庆历年间在原址重建或改建。 In 2000 and 2011, we cleaned up the underground palace at the Eight Cloud Tower in Zhouzhi County, Shaanxi Province. The upper ground floor of the square brick room, the lower ground palace. Earth Palace flat square, straight wall, corner save the spire, the middle of the South wall there are coupons corridor, corridor has three closed doors. Unearth unearthed stone letters, sarcophagi, white marble niche statues and coins. According to the underground palace system and unearthed relics and other inference, eight cloud tower and its underground palace was built in the Tang Dynasty, Northern Song Dynasty rebuilt or rebuilt in the original site.