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YS 101
It is a series of exploration and adventure designed to take children into the mysterious world of the underground. Filled with detailed and colorful designs of pipes, this playset features special designs that bring the underground labyrinths and details to life. The Underground series allows children to develop their skills of discovery and invention. With this series, hidden tunnels can be explored and the secrets of the underworld can be solved. This process develops children's problem solving skills while encouraging them to develop their creativity.