Indoor climbing walls are artificial structures designed for rock climbing. They are typically made of plywood or fiberglass and feature various holds and grips that simulate natural rock formations. These walls can vary in height and difficulty, catering to climbers of all skill levels, from beginners to advanced athletes. Climbing gyms often include multiple routes, each with different colors to indicate difficulty levels. Safety measures, such as harnesses and padded flooring, are essential for preventing injuries. Indoor climbing walls provide a controlled environment for climbers to practice techniques and improve their strength, making them popular among fitness enthusiasts and adventure seekers alike.