Submitted by Wiliam Lorfing on Wed, 04/20/2011 - 5:43pm OLLI, the Osher Lifelong Learning Institute, presents Bob Seyfried and his lecture 'Offa's Dyke: 177 Mile Trek in Wales.' Details Duration: 1 hour 41 minPBCore Genres: Arts & Culture Lecture Citizen Journalism Environment Exercise Health House & Garden TravelPBCore Languages: EnglishCategory: DCTV - Locally ProducedDisposition: DCTV Playback ShelvesFormat: DVD