In this Wednesday, Sept. 13, 2017 photo, Chris Lowie, left, refuge manager Great Dismal Swamp National Wildlife Refuge, walks along a walkway after talking with volunteer Jim Seagraves, right, as they look over the construction of a walkway in the
In this Wednesday, Sept. 13, 2017 photo, Chris Lowie, left, refuge manager Great Dismal Swamp National Wildlife Refuge, walks along a walkway after talking with volunteer Jim Seagraves, right, as they look over the construction of a walkway in the swamp in Suffolk, Va. The U.S. Fish and Wildlife Service is trying to undo the damage by gradually “rewetting” the swamp. Lowie and his staff are slowly raising the water table in the swamp’s remaining 113,000 acres by capturing and rechanneling rainfall in the vast network of ditches that scar the land. (AP Photo/Steve Helber)