Climb

From Wormhole Sci-Fi MUD Homepage

There are many hills and mountains in the world that keep most adventurers away. This skill will let you explore some of these mountains. The skill is automatically used; if you don't have the skill you wont be able to even try to get up to the mountains. Be aware, there is a chance that you might fall down while climbing...

Falling down means that you take a small amount of damage, and fail to enter the next room. Climb skill reduces the chance of this happening.