20090930 Four Loops by akamediasystem published on 2009/09/30 21:43:56 +0000 I walked four times around the same place. Four loops. I was wearing binaural microphones. Even at the same place, the sound is never the same. But it is often familiar. I geologged as I walked. The geologging and the recording were started simultaneously. Here is the map of the walk. Special thanks to Kelly Snook from NASA for loan of the equipment.