An ancient lost island kingdom. It’s people came from the east. They were short with dark hair and broad shoulders.
They fought against the Eldar and elves for years as they advanced, and their glass like weapons and armors rivaled the elves amarnium. The Valantians left their unnamed lands in far east and sailed to find an archipelago of islands away from the Eldar armies. There they flourished. Their counterpart mainland were subjegated and crushed by the Eldar.
They named the island Valantia and they lived their many years. But the never forgot the Eldar and revenge burned hot in their cultural heart. When they felt they had advanced enough, they sought revenge against the Eldar. They built large temples and fortresses among the coasts of neighboring continents, expanding their own empire. They sent large armies into the underground cities of the Eldar.
They were successful for a while, until the Eldar discovered dark and terrible magics which allowed them to cast down the sky and whole settlements turned to dust.
The Eldar sought out their homeland and cast the island down into the sea, the Valantian Empire was lost, leaving behind only scattered ruins and myths of the strange teran race of people.