The original image under the marked areas, courtesy of the Concord Public Library, is of Thoreau’s engraving of his survey map of Walden Pond. You can explore the soundscape at Walden Pond through this sound map. Just click on the image above to access the map and scroll down the left column to hear the sounds of birds and the trains passing at different points around the pond. Take a moment to listen to how long it takes for birds to resume singing after the train passes.
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!