Grappling Hook
Shwooooooooppp, up I go!
The grappling hook is the best way to get up to the top of a mountain or cliff that is otherwise unclimbable.
To craft the grappling hook you'll need 3 iron ingots, 1 rope, a stick, and one wooden plank.
Using the grappling hook is super simple, right-click to throw the hook, and you'll go there. If you decide that the hook isn't going where you want it to, or don't want to travel all the way to your destination, just right-click again. Be careful though, you will take fall damage.