Molten lava and colliding tectonic plates. Floods, asteroid impacts, volcanic explosions, and gigantic floods. From these and other remarkable natural events, the landmass that is North America came into being. We take the land under our feet for granted. But the geological story behind its creation is extraordinary. Welcome to one of nature’s most dramatic and visually arresting puzzles.Molten lava and colliding tectonic plates. Floods, asteroid impacts, volcanic explosions, and gigantic floods. From these and other remarkable natural events, the landmass that is North America came into being. We take the land under our feet for granted. But the geological story behind its creation is extraordinary. Welcome to one of nature’s most dramatic and visually arresting puzzles.