|Key Holders||Battle Bat, Bat Battalion, Blob, Goblin Ambusher, Goblin Butcher, Goblin Tinkerer, Goblin Gambler|
|Chest Items||Moth Axe, Tourmaline, Amethyst, Amber, Lapis Lazuli|
|Gil Treasure||450-900 Gil|
|Notes||Key also opens Chest in Outer Horutoto Ruins|
The term "Horutoto Ruins" refers to the set of ancient towers that are spread across the plains of Sarutabaruta. While no one is certain why these massive structures were built, the powerful magical energy that emanates from them has been the center of Tarutaru scientific investigation for decades.