DaHua pothole

DaHua pothole is a collection of circular depressions carved into the riverbed of the Keelung River near Dahua Station. Water and gravel have slowly cut these rounded basins into the stone, creating a striking pattern of varying depths and diameters along the water channel.

Formation of these potholes began thousands of years ago when flowing water of the Keelung River continuously moved stones and sediment across the riverbed. This prolonged erosion process carved deeper and wider basins as the moving gravel worked like natural tools against the rock surface.

The site holds significance in local geological research, providing researchers and students with examples of natural river erosion patterns and rock formation studies.

The easiest way to reach this site is by train to Dahua Station, then following the marked paths that run along the riverbank. The riverbed stones can be wet and slippery, so wear sturdy shoes and move carefully, especially after recent rain when water levels rise.

The potholes appear most impressive when the river swells after rainfall and water rushes through the circular basins. During these wet periods, the rushing water demonstrates the carving power that created these formations over many centuries.

GPS coordinates: 25.04991,121.79754

Latest update: December 12, 2025 17:47