Eric Harder (second from right), Youghiogheny riverkeeper for the Mountain Watershed Association, speaks to a group of volunteers during the Keystone Trails Association’s riverbank cleanup event on Thursday at Ohiopyle Falls.  KTA’s Spring Hiking Weekend, which runs through Sunday, is expected to bring about 200 visitors to the Laurel Highlands. [Courtesy of Haley Feaster/Keystone Trails Association]