Sorry if I was dismissive. Yes, it's fascinating, it's something I've been following for years, so I figured it was common knowledge. Much more will be coming

Sorry if I was dismissive. Yes, it's fascinating, it's something I've been following for years, so I figured it was common knowledge. Much more will be coming in the next years with LIDAR tech becoming wide spread. All great river basins in the world sprouted civilizations, why wouldn't the greatest river of all? It's just that it's easier to spot ancient constructions in the desert than beneath the foliage of the densest forest in the world.