 from horseback. That was his determination. And by the 70s, Roger Summers did a calculation, and they calculated about 20,000. And that's when I came across these stone structures. But I wanted to... Then I moved out to where I'm talking to you from right now, which is close to my museum, the Stone Circle Lodge and Museum, where we do tours to the Stone Circle and to Adam's Calendar and so forth. And I started to walk the mountains. And within...