The basalt columns were formed approximately 8 to 17 million years ago.
The hexagonal pattern is the result of uniform contraction during the cooling of volcanic lava flow.
These formations are part of the broader Penghu Basalt Nature Reserve, which holds National Scenic Area status.
The basalt cliff face reaches heights of up to 30 meters in certain sections.
The site undergoes constant natural erosion, which continuously exposes new facets of the rock formation.
Chixi Columnar Basalt consists of a high-reaching cliff face formed by rapid cooling of volcanic lava during the Miocene epoch. The formation features thousands of vertical, hexagonal basalt columns created through the contraction of cooling igneous rock. It is one of the most well-preserved geological landscapes in the Penghu archipelago. The site is a protected natural monument within the Penghu Basalt Nature Reserve. The geological structures extend along the coastline, creating a distinct visual contrast against the surrounding sea and beach. The area demonstrates the volcanic history of the Taiwan Strait.
The elevated viewing platform or the shoreline path looking directly up at the full height of the columnar cliffs.
Visit during low tide to walk along the shoreline for a complete view of the column base.
Bring sturdy footwear, as the beach area consists of loose pebbles and uneven rocky ground.
Ensure you have sun protection, as there is virtually no natural shade at the base of the cliffs.
Attempting to visit during high tide, which covers the accessible walking area at the base of the cliffs.
Do not climb, touch, or attempt to chip away at the basalt columns as the site is a protected geological monument.
