The wall and crown knot is actually two knots. A crown knot is superimposed upon a wall knot as a decorative finish to the end of a line.
Figures A. and E. are shown looking directly at the end of a three-strand rope. Consider the rest of the rope to be going away from you, directly into the paper.
A. Start with a three-strand rope end-on, with its strands unlaid for several inches. The wall’s weave will be opposite the crown’s weave; in the wall, pull strand 1 over and under strand 3, and then up through the loop of strand 2.
B. Pull the knot tight.
C. & D. To cast the crown knot, weave the opposite way; pull strand 1 under and over strand 3, and then down through the loop of strand 2.
E. Pull the knot tight. Heat-cut the free ends of the strands close to the knot and dimple the ends if necessary.
Original materials used with thanks to Irene Rodriguez and John Bennett