It was a cloudy windy day when I visited the beach at the base of the grassland dunes in Warren Dunes State Park. In this second recording both contact microphones were attached to the twisted metal wire which held up the wooden pieces of this fence. The picture shows the setup for the first recording where the right contact microphone was attached to one of the metal posts. I love the low vibrations in this recording and was really surprised to hear them develop from this simple fence.