Through the forest at stone mountain, and passes through the placenta chat along the edge of the side of steep cliff with difficulty. That one must create a path across the Kwai Yai River at Tambon tha so called "bridge on the River Kwai".
Through the overgrown jungle through backwoods and mountains along the edge of a steep cliff along with difficulty. The path to the one built over the River Kwai at Tha Makham so-called "Bridge on the River Kwai".
Through the forest for many ชัฎ and through the Rocky Mountains along the skirted along the steep cliffs with difficulty. Which route the one to build across the range, tambon tha tamarind, so called "bridge ข้ามแม่น้ำแคว" .