Larthial (pronounced LARR-thee-all) is an island on the southern side of the Tabaha Bay. Usually considered part of Talmithe, today most of Larthial is controlled by the Great House Hathna, though the elves themselves only live around the coasts in their stilt-palaces. The interior of the island is inhabited by various human, grippli, elven, and half-elven tribes, most of whom live nomadic lifestyles.
While the northern half of the island is covered by the tropical forests and grasslands characteristic of mainland Talmithe, the south is instead a more dense rainforest, rather more similar to the Laqto Rainforest to the west.