Courtesy of Concord Public Library

Above is an image, courtesy of the Concord Public Library, of Thoreau’s engraving of his survey map of Walden Pond. When this project is complete, you’ll be able to scroll over different parts of the map to hear the train passing from different distances around the pond. The goal of this project is to listen and measure how long it takes for birds to resume singing after the train passes.

Take a moment to listen to (and watch) this video of a train passing the pond.

Clearly in the video above, the train is very loud up close! You’ll notice I jumped while filming when the conductor blew the horn behind me. I was approximately 10-12 feet from the train. Higher quality footage and sound recordings coming soon!

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