Where is the registration office at?

South of park. South side of 190. It is not inside the park like many stations.

It is on top of the mountain on Hwy 190.

The best way I found it was by going down on 27 and taking a left turn just before you pass the Mountain Creek Inn hotel. And it's about 3 miles down to the left. Put it in your GPS. It's difficult for me to locate the first time. I hope this help.