Two mountaintops sits on the isles of Myin and Viir, Lighop and Snakerock respectively. They are well visible from a distance and are popular climbing spots. Lighop is dangerous, with its higher altitude and unstable footing, so it's only recommended to experienced climbers. Snakerock is classed as a medium-difficulty mountain, so the base camp is much fuller than the one at Lighop. There is also a big cave system under Lighop. Most parts of the system is closed off, both due to the danger of the unsafe areas, but also because there is some wild life living in the caves that can attack adventurers.
From the mountaintops runs rivers all the way down to the sea. The Blue Lake sits at the foot of Myin's mountain.
Fauna & Flora
These four islands are mostly covered in lush, deciduous forests. The trees close to the water grow big leaves that give good shade to the inhabitants. Up the rolling hills grows thick bushes.
(the isles have a small regent, like a duke or whatever)