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Go geocaching this spring in this introductory class! Join us at Grass River Natural Area on Saturday, March 10 at 1 pm and learn how to use GPS or map and compass to find a prize. This 1.5 hour program is best for adults and families with children 7 and above. More information at grassriver.org. Grass River Natural Area is located at 6500 Alden Highway, Bellaire MI.