They could have came through the different passes and just invaded. And they didn't have any weapons, so that would have been a pretty easy fight. Maybe they just picked up their stuff and they got out down the road there. And then the third possibility is that they just overgrew stuff. Is overgrew a word, overgraze, something like that. They used the land too hardcore. And eventually stuff stopped growing, so they picked up their stuff and they moved along.