A knot also known as lineman's loop, butterfly loop, alpine butterfly knot and lineman's rider, is a knot used to form a fixed loop in the middle of a rope. Often used in the middle of a rope for glacier travel.
A knot also known as lineman's loop, butterfly loop, alpine butterfly knot and lineman's rider, is a knot used to form a fixed loop in the middle of a rope. Often used in the middle of a rope for glacier travel.