What is the purpose of a "Roll Top" jump?

The purpose of a "Roll Top" jump is to simulate real-world obstacles that a horse and rider might encounter in various environments. This type of jump is designed with a rounded top, resembling natural features such as logs or hills, which helps to prepare the horse for jumping over irregular and varied terrain. It encourages the horse to develop its jumping technique and confidence when faced with obstacles that are not perfectly rectangular or straight, aiding in the realistic training process. By incorporating jumps like the Roll Top into training courses, riders can help their horses adapt to the types of jumps they may encounter in eventing or cross-country situations, thus enhancing both the rider's skills and the horse's overall performance.