Pull into prehistoric station with a delightful dinosaur train set for little learners! It's an open-ended storytelling playset that encourages creativity, problem solving, and language development. Interactive features include a waterfall tunnel, volcano and sky arches, and a sound block that makes fun noises (dinosaur roars, a train whistle or a cheerful melody). The colorful dinosaur blocks fit into the storage lid like puzzle pieces, and also onto the carriages to form a dino train! We love that all the pieces fit into the bucket for easy storage. Requires 1 CR2032 battery, included.