Located in An Ninh Dong commune, Tuy An district of the south-central province of Phu Yen, Ghenh Da Dia includes strangely structured rocks with longitudinal and circular veins, forming solid blocks right next to the sea. These structures, stretching more than two kilometers along the coast, are jet-black and light-yellow bazan stone columns with different shapes of round, square, or polygon, heaped up like giant stacks of plates. The landscape is an undeniable destination for anyone who aims to make a memorable tour to Vietnam. Source: Vietnam News Agency