Wish I could have been there for this weekend to meet and ride with some of ya'll. My family and I were there from Sunday til Tuesday with friends and rode the whole park several times. Be sure and go to the old mine and stamp mill foundation at the east end of the park. We went to the Missouri Falls Monday evening and it is a LOONG drive out there. East end of 510 is open and has a scenic drive to a deadend about a half mile from midway loop intersection back to the mine trail entrance. The current map has some open trails missing (510, part of Hawks Overlook). Take 836 north to the T and turn left for the best trail in the park.
Rain will be good if they don't close the trails as it was very dusty!
I saw more Pioneers there than anything else!