The Hollows (Lake Atwood Shelter) Conservation Area hosts an assortment of natural communities, including sand prairie, wet silt loam prairie, and basin marsh habitats. Within its boundaries, 335 native wetland and woodland wildflowers, grasses, and plants can be spotted along the trails and around the campgrounds. These include little bluestem, rough blazing star, prairie dock, compass plant, golden alexander, bird’s foot violet, spiderwort, trillium, horsetail and bottle gentian, as well as six state-endangered and threatened plant species. Dress for the weather and wear comfortable shoes.