The Wollryeong-ri Cactus Colony is a protected natural area on the coast of Hallim-eup in Jeju, where prickly pear cacti grow by the sea. A wooden boardwalk along the shore lets you look at the cacti and the ocean and walk toward the harbor. The cactus fruit can be seen, and the cactus flowers bloom in June and July. There is no shade, so sun protection is needed.