Square lashing is a technique used in knot tying to join two poles or spars at a right angle. This method is commonly employed in outdoor activities like camping and scouting, where sturdy structures are needed. The lashing creates a strong connection, allowing the poles to support weight and resist movement. To perform square lashing, you start by laying one pole horizontally and the other vertically. Using a length of rope, you wrap it around both poles in a specific pattern, securing them tightly. This technique is essential for building structures like tents, fishing rafts, or scout towers.