The Alpine Butterfly is generally considered to be one of the strongest and most secure loop knots. It is strong, secure, and easily tied. It can be tied in the middle of a rope when you don't have access to the ends. It can be pulled in two or three directions without distorting, and it can be used to strengthen a damaged rope by isolating the damaged area. These things make the Alpine Butterfly a very versatile and valuable knot to know.
If you are tying the Alpine Butterfly at the end of a rope, you can tie a Stopper Knot to the free end of the rope for added security.
How to Tie an Alpine Butterfly Knot?