I love these little sculptures built by visitors.
They make me think of Scottish cairns.
There are some in the water too. I saw a couple of teenage girls working on this one.
Thoreau studied nature closely, and started writing his journals while living at the cabin. The journals, which he wrote for the rest of his life, are filled with detailed observations of nature, and are used by scientists today. (See here.) It is said that he built the cabin to find a home and to find himself. It seems that he did both.
The cabin has inspired many people to build reproductions. You can see Thoreau's original list of building materials here. This company will build one for you, or sell you a kit so you can do it yourself.
By the time I completed my walk around Walden Pond, I decided I need to build a little cabin in the Catskills. I think that will remain a fantasy. If you have small cabin fantasies you will enjoy this site.