I’ve posted this before, but here’s a slightly updated version of a few essential knots a Vertical Cave and/or Mine Leader I’d suggest should have. Click on the knot below to get some further info in it’s use and how to tie it.
Supper useful knot ideal for rigging traverses or pitch heads (although doesn’t provide a belay point, more on that later…), isolating damaged sections, end knots (contrary to what some say; some recent testing supports this!) or an intermediated belay.
Worth learning to tie it this way as it makes it easier to measure where you need to tie the knot (my opinion!!)
More on the Alpine butterfly for the rope geeks: http://www.ropelab.com.au/the-awesome-alpine-butterfly/
And some of the issues with tying it differently…
And some reasons to avoid the “Cavers Butterfly” alternative:
Full video here: https://youtu.be/rRWjieZw8b4
And some more for the rope geek: http://www.ropelab.com.au/the-fabulous-figure-of-8-knot/
Great for pitch heads, but beware of clipping into just one of the loops
Safety Notice about the Double Bowline failing in use.
Or view the giff here: http://www.animatedknots.com/bowlinebight/index.php?Categ=boating&LogoImage=LogoGrog.png&Website=www.animatedknots.com#Movie