The lark’s head is what most people would call a basic slip knot.  It should not be used by itself on someone as it can easily tighten and cause damage but it can be a good way to start a tie and you’ll also use it later to extend rope.

Next: Square Knot Single Column

Rope Fundamentals I Class

Consent | Types of Rope | Cutters | Nerve Injury Basics | Lark’s Head | Square Knot Single Column | Somerville Bowline | Double Column Tie | Hands Over Head | Extending Rope | Chest Harness | In-Line Cuff | Gunslinger | Spiral Futomomo | Two Band Futomomo