In writing my most recent book, I went down a number of rabbit holes in my research. My story takes place in northern Minnesota, by Lake Superior and Superior National Forest. In looking for myths and legends related to the indigenous people of the area, I discovered the Laurel People, who preceded all others.
After I had completed the book, I read an article on the Internet about a group of Colorado-based scientists who traveled to the Boundary Waters Canoe Area (basically the same area) and discovered cooking vessels, that when carbon-dated, date back to the Laurel People. How exciting is that!