Pha Chu, or Pha Cheot Chu (ผาเชิดชูหรือผาเชิดชู), is a cliff within Si Nan National Park (อุทยานแห่งชาติศรีน่าน) which covers extensive forested and mountainous areas. A national flag pole has a lanyard running all the way down to the foot of the hill, the longest in the country.