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Preserving natural habitat
Friends of the Wissahickon (Philadelphia) is a nonprofit organization that has been dedicated to the promotion of the park. It is the oldest and one of the largest of the more than 80 groups of Friends of the Parks in Philadelphia. It preserves forests and streams, and restores historical structures and trails in the park. Its mission is to preserve the natural beauty of the Wissahickon Valley and stimulate public interest.