You can find iron ore in caves usually next to coal or just by itself. Iron is the third strongest material after god and diamonds when it comes to power. For durability it would be the second most powerful after diamonds. Now you can learn the types of caves and mining. The first one is a normal cave, found easily throughout the world. The second is a giant cave which is really uncommon, some might call them pretty rare. And the final type of cave is a ravine which is about as rare as the giant cave. They usually contain lots of iron, gold and occasionally diamonds.