Under the surface of the River Shannon in Limerick

Jul 18, 2012, 05:26 PM

Underground Unknown and Forgottens - World Listening Day 2012 in Limerick City. As the tunnels all end in the river Shannon, we recorded the underwater sound with a hydrophone. The burst from 1m03s to 1m08s is a swan landing on the water about 5 meters from the hydrophone. #hydrophone #Ireland #Limerick #underground #WLD2012