Many source said that there are three main ridges in the Kau Nga Leng(狗牙嶺). There is actually one more which is even more to the east than the East Kau Nga Leng(東狗牙). So some people called it the East East Kau Nga Leng, the sound of the formal name should be Kau Ma Ridge(狗麻脊). It is relatively easier than the other three ridge but you still need to be a serious hiker to try this.