Another place that should be mentioned is the liyushan mud volcano located on the boundary between wantan and hsinyuan . it spurts out bubbling hot mud at irregular intervals . each such burst of volcanic activity usually lasts four to eight hours 另外值得一提的景点,是位于万丹与新园交界的鲤鱼山泥火山,会不定时喷发滚热泥浆,通常每次喷发时间为四到八小时。