Qingwan Basalt Introduction
The Penghu Islands are primarily composed of basalt, formed by repeated eruptions of lava from underground fissures cooling at the surface. The earliest volcanic lava dates back about 18 million years to a quiet eruption, with volcanic activity ceasing around 8 million years ago. The unique columnar landforms in Penghu, shaped by basalt, have steep cliffs surrounding them. Over time, through weathering, wind erosion, and marine erosion, various distinctive geological features have developed. Additionally, the rapid cooling of lava often creates tension within the rock, leading to polygonal fracturing known as columnar jointing. This creates a characteristic landscape with straight, curved, or inclined columns of varying directions, making Penghu's basalt formations particularly striking. In Magong, on the left side of County Highway 201 heading toward Fenggui, you can see the impressive Qingshan columnar basalt rising by the roadside. The basalt in Penghu showcases diverse appearances due to prolonged weathering and erosion, and Qingshan is one of the most notable sites for columnar basalt. Here, visitors can not only admire the magnificent and solitary basalt formations but also enjoy the coastal scenery. [Recommended Stay Time] 1 hour
Qingwan Basalt
