Answer:
Ural Mountains
Explanation:
The Ural Mountains are a mountain range that runs 2500km from Russia to Kazakhstan
It's either A or C
Both are just wastage of water.
Because with maps they knew where to go , without them they will be lost
In fact, since the Moon is constantly rotating on it's own axis, there is no area of the planetoid which is permanent darkness, and the far side of the Moon is only completely devoid of sunlight during a Full Moon - when the Sun is facing the Moon with the Earth in between.