 I suspect that the reasons for Adam's calendar may have been slightly different for the reasons for the stone circles. Because Adam's calendar is one of a kind. It's unique. Well, there could be others like it, but we haven't found them yet. But the stone circles, we know are energy-generating devices. We also know how the stone circles generate energy, and maybe you can bring me back to that question. But let me first deal with Adam's calendar. So Adam's calendar is situated right on the edge of this huge crater.