The "Diamond Hitch" is one of the most high-tech knots ever created. It was used to tie loads to pack animals. Many versions existed, not only for different types of loads but also for different types of terrain.
In rough country, where there was a frequent trouble with pack animals falling with their load, packers tied the Diamond Hitch so that the final knot was on top of the animal's back where it could be easily reached and loosened with the animal down. There was also a distinction between the one man and the two man Diamond Hitch. The one man version was employed by only one packer and required that he made two trips around the animal in tying it.
Detailed and illustrated instructions for tying the high-tech knot can be found in the 1916 "Manual of pack transportation".
