Tamagusuku (玉城村; -son) is a village located in Shimajiri district, Okinawa, Japan. As of 2003, the village has an estimated population of 10,486 and the density of 621.58 persons per km². The total area is 16.87 km². In Tamagusuku, to the south-west of Naha, the Gyokusendo cave with a total length of five kilometers is known for its beautiful stalagmites and stalactites. 850 metres of these caves are open to tourists. Villages in Okinawa Prefecture Source: [wikipedia: tamagusuku, okinawa]