8210b202xunknownknockechocontext by bipedalist published on 2010-08-03T22:34:57Z Larger context of unidentified sounds in a research area Comment by bipedalist I'm in a lot of pain early on in the process of trying to drive some apples into an impaled tree branch when the apple splits and a sharp branchlet almost goes through the palm of my hand. 2010-08-05T02:14:58Z Comment by bipedalist This is the larger context recording for the sound below; it can be heard at the 1:29 mark 2010-08-04T02:07:49Z Comment by bipedalist At 1:29 a loud resonant what sounds like wood knock with reverberating echo occurs. This is in an area with no known human activity occurring at the time. 2010-08-03T22:52:50Z