Eastern mountains

The Eastern mountains are a mountain range in Serenia. They apparently lie to the east of the hills of Serenia, where the Wedzel Wolves live.

Behind the scenes
In the KQ5 the mountains to the east were known as the Great Mountains or great mountains. While Chapter 1 does refer to Great Mountains in one line, the reference appears to be more a refeference to KQ3 mountain range, which was called Great Mountains in The King's Quest Companion books.