Low tide natural bridges are fascinating. The first time I realized they were a thing was when I saw the low tide bridge to Salt Island in Gloucester, MA [0]. The broomway seems much more treacherous though!<p>[0] <a href="https://www.flickr.com/photos/7831824@N04/35684974504" rel="nofollow">https://www.flickr.com/photos/7831824@N04/35684974504</a>
I can strongly recommend Robert Macfarlane's <i>The Old Ways: A Journey on Foot</i> which has a chapter on the Broomway.<p>The book was recommended to me here on HN after I happened to mention that I live near an "Old North Road" (for possibly Agricola levels of "Old").
Recent discussion on a Washington Post article about The Broomway: <a href="https://news.ycombinator.com/item?id=20547104" rel="nofollow">https://news.ycombinator.com/item?id=20547104</a>