The Manzamo Terrace is part of the Okinawa Kaigon Quasi-National park located near Onna Village. Click here for a map. What’s a Quasi-National park? Originally a prefectural park, it got its new title when Okinawa reverted to Japanese control 40 years ago*. The sight is now a designated scenic spot and composed of mostly limestone, which has enabled the interesting cliff formations to form along the coast. Manzamo Terrace is easily accessible from most places on the Okinawa mainland, as it is situated in roughly the middle of the main island along the major route 58.