Next up is [[iron lump|iron]], this is the hardest part.
To find iron activate your pickaxe, right click on a tile that says "rock" and choose "prospect" from the "mining" sub-menu. Finding iron Iron is very difficult and you the most commonly occurring ore in Wurm, but it can be a challenge to find. You may have to search through hundreds of rock tiles before you manage to find an iron mine - its basically complete luck.
If you are unlucky with finding an [[Iron Vein|iron vein]] you can also [[Foraging|rummage]] many rock tiles and collect the [[iron rock]]s which weight 3kg and give 0.2kg of iron when melted. This is not much but may be enough to make the nails needed for building the house.