Blue Mountains

From Witcher Wiki

Blue Mountains is a large mountain range dividing the Northern Kingdoms from Haakland and Zerrikania. The mountains work as a natural border for at least Lyria, Aedirn and Kaedwen. Dol Blathanna, the Valley of Flowers, lies at the very foot of the mountains, and the river Yaruga's spring is hidden among the rocky heights.

The free elves have made their abode in the mountains; among them is also Ida Emean aep Sivney.