Stormy Mountain (風の谷, Kaze no Tani, lit. Valley of the Wind) is a location in Tomba!. A Treasure Chest containing the Grapple can be found towards the end of this area, right next to the entrance to the Lava Caves.
Before the curse has been broken
A grey sky darkens the area and a harsh wind pushes Tomba right constantly.
After the curse has been broken
A clear blue sky can be seen in the distance, and the wind now blows gently, no longer affecting Tomba's performance in any way.