Board Thread:Help Desk/@comment-8464397-20130422011131/@comment-50.27.249.161-20130422060242

I really don't know how you could miss it, it's everywhere. It's so common, it has no sale value. Maybe you haven't actually reached the underworld, there is no dirt or rock, just ash, lava and burned out buildings. In order to mine it, you need some obsisian potion, as hellstone releases lava when mined. The best way to mine it is take some obsidian and some gills potions and dive right in to the lava, that way, you can mine fairly unmolested. Meaning, monsters won't attack you, (you still have to watch out for imps, however), otherwise you are constantly interrupted, there is hardly a moments peace down there.