From Onigajo, Shichirimihama continues about 22 km to the mouth of the Kumanogawa River, making it Japan’s longest gravel beach. The unique scenery incorporating the majestic Kumano-nada Sea, the sandy beach and rows of pine trees is a highlight. Caution is required when walking along the beach as the waves of the Pacific Ocean strike hard when they break on the beach and the current is strong.