Guy wires are strong cables used to stabilize tall structures, such as radio towers and communication masts. They are anchored to the ground or other structures to prevent swaying and ensure stability against wind and other forces. These wires are typically made of steel or other durable materials and are tensioned to provide support. Proper installation and maintenance of guy wires are essential for the safety and longevity of the structures they support, helping to prevent potential collapses or damage during severe weather conditions.