Along Central Cross-Island Highway, after passing Jiuqudong (Tunnel of Nine Turns), you will arrive at Cimu Bridge(Motherly Devotion Bridge), which is an H-Shape hanging bridge with marble stone lions on each end and with marble lotus stones on two sides. The rock beneath the bridge looks like a frog. The frog-like rock is composed of black layer of schist at the top and white marble at the bottom. A pavilion was built on this frog rock, becoming the crown on the frog. This was built by late President Chiang Jing-guo, in memory of his mother, during construction of the road. Cimu pavilion area is on the east side of the bridge, built by late President Chiang Kai-shek, in memory of his mother, Mrs. Wang.

This area where Laoxi River flowing from the marble valley into Liwu River is called the "Heliu" which stands for "merging flows." The cliff has two different rocks layers.