The evening of the 12th of July 2008 I was in Southern Illinois where I was invited to join a fellow researcher as part of my 48 in ’08 project.
After leaving the trail I recorded this most unusual sound.
If any listener has an idea of what this could be please contact me. It is my opinion that perhaps it is a sound in the environment being mimicked.
A more complete write up can be found at escAPEe’s hideaway.