30sepAll Day02octHalloween Spooktacular Weekend 1It's Halloween at Jellystone Park! Activities will include loads of fun and plenty of scares! Join us for arts, crafts, and activities, pumpkin carving, costume contests, and a campsite/cabin decorating contest! Our campers are known for competitive decorating, outdoor cooking, and having a good time. Prizes awarded for first-fifth places in campsite/cabin contests. Don't forget candy for the trick or treaters!