Ganh Da Dia

Ganh Da Dia is a coastal basalt rock formation in Phu Yen made up of thousands of hexagonal columns that rise from the shore. The columns create a natural geometric pattern that extends downward into the water, forming a dramatic rocky landscape.

The rock formation developed millions of years ago through volcanic activity when lava cooled rapidly and crystallized into columnar structures. This natural cooling process created the distinctive appearance that visitors see along the shore today.

Local fishermen pass down stories about this geological formation through generations, incorporating it into Vietnamese coastal traditions and myths.

Morning hours provide the best light for photography and observation of the rock formations. Wear comfortable shoes and watch for slippery surfaces, especially when tides are high or waves reach the rocks.

The columns resemble stacked plates descending from shore into the sea, creating a natural staircase pattern. This visual arrangement makes the formation one of Vietnam's most distinctive coastal structures.