Metalwoods, towering trees that reached heights of thirty to forty meters, were indigenous to the planet Kuras III. Exhibiting metallic gray leaves and a smooth, dark gray trunk, these trees were typically located in areas with ore deposits. To gain nutrients, the tree's roots penetrated deep into the planetary crust, drawing upon the ore. The Kuras system's white dwarf star provided the energy that enabled the tree to process the ore and transform it into bark layers.