Tallon IV's scar is the mark left by the impact of the Leviathan on the surface of Tallon IV. This Leviathan would later become the Impact Crater, and struck Tallon IV 50 years prior to the events of Metroid Prime. The scar can be seen from space on the planet, and is mentioned in a Galactic Federation Data entry in Metroid Prime 3: Corruption, "Tallon IV Incident". The entry regards the state of the planet in the years since Samus Aran destroyed the Crater. It states that while the scar is still visible, the planet has largely recovered from the damage done to its ecosystem by Phazon and is once again capable of sustaining life.