Join us at Hartley Nature Center this Wednesday, May 4  for “Mountain Biking Opportunities in Duluth”-  Adam Sundberg, president of COGGS, will present information on the expanding opportunities for mountain biking in and around Duluth. COGGS has been working diligently to provide sanctioned mountain biking trails for the citizens of this region. Program is sponsored by the McCabe Chapter of the Izaak Walton League and begins at 7 p.m.