Mithivî is a small mountain range on the isle of Arcana. It is the abode of dwarves, giant eagles, pegataurs, aarakocra, and other creatures. The dwarves have a large number of giant eagles, which they use as aerial steeds. South of these mountains is Izradî and the ruins of Urkalzîr.

The mountains are covered with many impact craters. These are very old, as no denizens of the area can claim any recordings of these impacts. These mountains are a magnet for lightning strikes, with the bolts drawn unerringly to the large deposits of meteorite metals buried or exposed on the slopes. Some astronomers claim that the meteorites that struck this mountain range might have led to the disappearance of the Lith-Crillion from Arcana. The numerous impacts would surely have devastated the area. They also think these meteorites may have been fragments of the Dûlan-Nûl Firestorm.

Notable Areas