The Heimurinn Chronicles
The Ottari were a race of humans that took over the majority of Cyfandir, Frynard, Svartikogur, and Malnova during most of the Bronze Age and the Early Iron Age. They were tall and olive skinned with dark curly hair and dark eyes.
They built towering buildings and massive cities. Their technology was highly advanced and they possessed great knowledge of the world and science. They were responsible for the spreading of the Worship of the Trinity , and their language influenced most cultural groups to the point where many groups could communicate amongst each other with minimal difficulty.
But at the height of their power and expanse of their empire, they vanished; nearly over night. Unfortunately their most of their knowledge and technology disappeared along with them; leaving only their crumbling ruins behind.