The islands of the Penghu Archipelago are mainly formed by basalts. Lava was issued from the gaps of the crust many times and cooled down on the surface to form the islands. The earliest volcanic lava was the product of a quiet eruption occurring about 18 million years ago and the volcanic activity stopped about 8 million years ago. The Penghu Archipelago is a quadrangular mesa of basalts. The crags around the islands have developed to various unique terrains and landscapes after being weathered, wind-eroded, and wave-eroded for many years. The rock mass produces tension due to rapid shrinkage and cooling of the lava, resulting in many cracks in the form of polygonal columns on the rocks. These fracture surfaces are known as columnar joints. The straight, curved and inclined surfaces are the most special features of the basalt landscape in Penghu.
In Magong, tourists can see the Qingwan columnar basalts rising straight up on the wayside along the hill to the left of the county road No. 201 directing toward Fongguei. The basalt in Penghu forms different landscapes after being weathered and wind-eroded for many years, and the columnar basalts in Qingwan are one of the most special landscapes on the islands.
In addition to the magnificent, tremendous and separately developed basalts, tourists can enjoy the beautiful scenery along the coast in Qingwan.
【Recommended stay time】 1 hour