The image shows how to tie the Alpine butterfly knot.
LadyofHats
2005-02-05
<a rel="nofollow" class="external free" href="http://www.iland.net/">http://www.iland.net/</a> <br><a href="https://en.wikipedia.org/wiki/The_Ashley_Book_of_Knots" class="extiw" title="w:The Ashley Book of Knots">The Ashley Book of Knots</a> picture #1053, names given: "Lineman's Loop"