You travel and wonder what you will see when you get there. This park is where there are eroded pillars that have been formed over many thousands of years. The Thais say it is the Thai grand canyon, bit of an exaggeration. It is though impressive to walk through. The name is in English the city of ghosts, and you can imagine this.
It is an easy stop on a tour between Phrae and Nan just off the main highway.
Give it a go.