Yeah, so in like the 1700s, I think it was. Pre-industrial age. Well, the early days. But no diesel power, no hydraulics. And this is the Thunderstone. So we did, like in Russia, they moved this thing from Finland to Russia. It's at St. Petersburg. They carved it as they went. It's the base now for, I think, a bronze statue of Peter the Great. But this is how they did it. And so basically, you can see the capstands, the twist things these dudes are working on. They're rotating. They would dig these giant holes to anchor these big logs in the ground to then use pulleys and force multipliers with dudes on giant rails. And then they would have these huge big iron rails that they would put on the ground and carry back and forth. And the whole thing was moving on these bronze spheres, these big, giant bowling ball-sized spheres of bronze. And on a good day, they'd move this thing 150 meters. What's that? 450 feet? Still pretty impressive. Yeah, but it took them years and years. And then, and this thing weighed around 1,500 tons.