North Wall of Fengxian Si. Tang Dynasty, 675 A.D. Longmen Grottoes. The Fengxian cave, also known as the "Great Image Niche," was commissioned by Wu Zetian. The layout of the nine figures is a pentad (central Buddha flanked by disciples and bodhisattvas) on the rear wall, with a lokapala and a vajrapani on each side wall. The right rear wall (at photo left) and north wall (at photo right) are seen here. The lokapala on the north wall, holding a stupa, is Vaishravana.