If you already learned the lineman's loop/alpine butterfly loop (ABOK #1053) then you already know most of this knot too.
So why not go ahead and learn it? Click on images for larger images.
Instructions, if you need them:
- Make a bight.
- Twist the bight.
- Twist the bight again.
- Fold the top loop down.
- Feed it into the centre loop from behind.
- Feed the left and right loops into the centre loop.
- Pull the centre loop downward.
- Tighten and dress the knot.