Swallow Grotto Introduction
The width of the rock wall at Yanzi Cliff is approximately 40 meters. The upper part features undulating parallel lines, while the lower section has a concave wall that is about 2 meters high. A large protruding cliff exhibits horizontal grooves formed by wind erosion, which are clearly visible and densely populated with uniform holes, said to be a place where swallows used to nest. There is a mountain path that passes beneath the cliff; during the rainy season, the water cascades down from the cliff, creating the sensation of walking through a water curtain cave.
