Rush Mountain Adventure Park Spring Fling and Glow Egg Hunt.
Rush Mountain Adventure Park 13622 Highway 40, Keystone, SD, United StatesOn April 3 and 4, Rushmore Cave will be full of colorful, glowing Easter eggs! Count them up and enter your score for a chance to win the grand prize. The Spring Fling includes face painting, games, and prizes, and you’ll have the opportunity to take pictures with the Easter Bunny. Ticket prices vary by