Lightyear Frontier is a combination survival and farm simulation game where you find yourself on an uninhabited planet. To thrive, you need to build yourself a little house and workshop, so you can grow plants, have a place to sleep, and upgrade your Lightyear Frontier mech and other tools. To get all these buildings and upgrades, you'll first have to find a selection of different ore, rocks, and other materials around the world, including coal. This rock appears in a couple of spots on the map, but the best place to look for it is in Pine Heights.