I hope you don't mind a few more photos, some of which have been Instagrammed (is that a word?). Jon and I walked the perimeter of Walden Pond on Columbus Day. It was a beautiful fall day and I took many photos from different points along the trail. In case you're not familiar with the site, Henry David Thoreau lived in a modest one room cabin at Walden Pond (in historic Concord, Massachusetts) from July 1845 to September 1847.
Walden Pond is considered to be the birthplace of the conservation movement and I think you can see why from these photos. To learn more about Thoreau and Walden Pond, visit the Walden Pond State Reservation website here. If you're in the area, I highly recommend a visit, especially during fall. It's a peaceful, but popular park and even a bit crowded when the weather is especially nice.