 Well, this is a limestone cave, okay? And so you have lots of things like stalagmites and stalactites that form naturally inside the cave. Some of them are immensely large. Some of them are very small. In this case, we have these little small stalagmite, stalactite-like growths that had developed on top of the art, which is on the ceiling of this cave and in one case on the wall of the cave. And what we do is we collect those little, we sample those little growths