We spent 7 summers as volunteers in Yellowstone. It is an amazing place. We worked at Snake River Ranger Station. I was in the backcountry office and arranged backpacking trips and sold fishing and boating permits. Also did a lot of directing and helping people decide what to see. Be sure when you come to visit the park allow plenty of time. It's a huge place and you can't see it in a day. you can barely drive through it in a day! A minimum of 3 days just to see the main attractions, and 5 or more to do any hiking or side trips. I was sorry to see our days there end, but the drive out was so far from TN, and I picked up an intestinal parasite the last year we were there.