The world's only church built in rocks, the gate is a little hard to find, such as the tunnel entrance, the appearance of the church will completely overturn the concept. The pipe organ on the rock wall, the piano on the steps, let people not know whether it is a church or a concert hall. After entering, it happens to bump into a chorus in rehearsal, playing in such rocks, with its own echo, tourists unconsciously sit down quietly. Listen and listen. When performing formally, the effect must be first-class.