The four features of Tunnel Hill are the glistening and translucent goose neck stalactite, curly stone branch, snowwhite crystal, and magic stone flowering and stone hair.

• 穿岩位于山底，长500余米，洞内除石钟乳外，尚有罕见的透明结晶体--石枝、鹅管等，为岩溶地貌奇景。