Boulder is a large rock found throughout many biomes in 7 Days to Die. Boulders are an excellent source of Small Stones as well as Raw Iron. Boulders, when harvested, may also give Lead or Nitrate Powder . Boulders appear to be approximately half the players height. Other boulders that are taller than the player can be harvested but give more small stones but fewer resources such as raw iron and lead. Boulders appear to be the best means of gathering Raw Iron besides spelunking in Caves in search of Iron Ore veins.