(VA) (Fairfax County Parks) Join our park naturalist on a hike and explore wild plants and animals throughout the trails. Learn how to use the iNaturalist app to take pictures of things you find along the way. Smart phones, cameras and binoculars welcome. Each hike will feature a different theme and may include: salamanders, birds and other wildlife, wildflowers, trees, nature photography, cultural history, or a scenic destination. 8 to Adult.