The basalt columns were formed approximately 17 million years ago during the Miocene epoch.
The distinctive shape results from the contraction of lava as it cooled, forming hexagonal pillars.
The site is part of the Penghu Geopark, which highlights the region's unique volcanic history.
Weathering has created a 'waterfall' illusion where the columns appear to flow downward toward the shore.
Chixi Rock Waterfall is a geological formation located in Xiyu Township, Penghu, characterized by vertical basalt columns that mimic the visual appearance of a cascading waterfall. The basalt cliffs were formed by volcanic activity and subsequent cooling that created hexagonal columnar joints. Erosion and weathering processes have sculpted the rock face to emphasize its columnar structure. The site is a prominent example of the diverse igneous landscapes found within the Penghu Archipelago. Visitors can observe the distinct stratification and geometry of the basalt walls along the coastal terrain. The geological structure remains stable and accessible for viewing as part of the Penghu National Scenic Area.
From the lower observation path directly facing the cliff face to capture the full vertical extent of the columns.
Wear sturdy, closed-toe walking shoes to navigate the uneven volcanic rock surfaces safely.
Bring sun protection, as the site has minimal natural shade and high exposure to coastal winds.
Check tide charts before visiting to ensure the cliff base is accessible and dry.
Visiting during high tide, which can obscure access to the shoreline and limit viewing angles.
Do not climb on, chisel, or remove fragments from the basalt columns as they are protected geological features.
