Yamashita First Cave Site Park (山下洞穴遺跡公園, Yamashita Dōketsuiseki Kōen) is an urban park in Naha, Okinawa. The park was opened by the city in December 2015. An opening inauguration ceremony was held on January 8, 2016 in Yamashita Town, Naha. The 900 m2 (9,687.52 sq ft) park was created through private land purchases by the city which cost an estimated 100 million yen.