Cave 16 is the most important Northern Qi cave at the Tianlongshan site. The porch still has elements of post and lintel construction and bracketing supporting the overhanging eave that derive from construction in wood. The interior had fine sculptures that partially remain. The cave is now inaccessible from the path, which may account for its relatively good state of preservation. Cave 17 is a relatively small Tang cave that had numerous fine sculptural images. On the interior there were three seated Buddhas, two standing bodhisattvas, and six seated bodhisattvas around three walls. Many figures and fragments from Cave 17 are known to be in museums outside China.
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