16sepAll Day18Halloween 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. Don't forget candy for the trick or treaters! (approx. 450-500 kids)!