Penghu Columnar Basalt Nature Reserve

The protected area spans three islands featuring vertical formations of dark gray basalt columns rising directly from the ocean surface across 30 hectares at low tide.

Volcanic activities dating back 17 million years created these geological formations through rapid cooling of magma, resulting in the hexagonal basalt columns across the archipelago.

The reserve functions as a primary nesting ground for numerous seabird species, including the Black-naped Tern and Roseate Tern during summer breeding seasons.

Entry to the reserve requires authorization from Penghu County authorities, with strict regulations to protect both the geological structures and bird nesting areas.

The columnar formations demonstrate variations in structure, from straight vertical columns to curved patterns, shaped by different cooling rates of ancient lava flows.

Location: Baisha Township

GPS coordinates: 23.67819,119.66831

Latest update: May 28, 2025 10:42