This is the “snare knot”, which I have to admit was new to me. It did look familiar, however! The animated knots website describes the similar poacher’s knot, aka strangle snare or a double overhand noose, as a double overhand on a bight. It also provides the useful information that this is a good knot for high modulus ropes that might fail with knots such as the bowline.
From the double overhand on a bight comes the triple overhand, scaffold knot or triple overhand noose, another strong, useful loop.
The previous blog featured toggles tied into the middle of ropes. Two methods of doing this, one for a clove hitch, the other for the related constrictor knot.
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