The Mountain Peak is a location first seen in the book "La petite soeur des Pyjamasques".
The mountain is located at the outskirts of Tarabiscoville where Yoyo, Bibou and Gluglu reside. If one flies with a height that is very high or travels with a Stork, one will be able to travel to the Mountain Peak.
The Mountain Peak is surrounded by a large numerous group of mountains that is inhabited by mutant cabbages known as Choux Carnivores who were lead by their champion known as Ogrechou. If one is not careful, there is a dangerous wind and airline planes that fly across the mountains which can lead the person to be blown into a huge void that the person can fall into.