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Aerial view of the stunning Yin-Yang Sea, overlooking the beauty of Taiwan’s version of the Blue Hole

Published: 2026-09-24 👁 101 views
Last updated 2026-09-24 — Taiwan boasts world-class natural landscapes, and its rich scenic beauty has led international tourists and media to call it a beautiful island. The dramatic gradient of seawater colors, aside from Italy’s Blue Hole, can also be found in the Shuishe Cave area of Ruifang District, New Taipei...

By MOOK Scenic Spots Christopher | Photos provided by Flying in the Sky

Taiwan boasts world-class natural landscapes, and its rich scenic beauty has led international tourists and media to call it a beautiful island. The dramatic gradient of seawater colors, aside from Italy’s Blue Hole, can also be seen in the Yin-Yang Sea located north of the Shuishe Cave settlement in Ruifang District, New Taipei. The Yin-Yang Sea is a unique geographical feature of the northeastern coastal area, where the yellowish-brown seawater in the bay contrasts sharply with the deep blue of the open sea.

Aerial view of the Yin-Yang Sea at Shuishe Cave (Photo provided by Flying in the Sky)

The unique color gradient of the Yin-Yang Sea resembles that of Italy’s Blue Hole (Photo provided by Flying in the Sky)

Due to the region’s unique geology, the rock layers in Jinguashi contain large amounts of pyrite. Combined with the rainy climate of the northeastern region, abundant rainfall seeps into the ore, coating it with iron hydroxide and turning it yellowish-brown. The mineral-rich water then flows into the sea, where the high concentration of iron hydroxide floats on the surface. The bay’s seawater does not disperse easily, eventually creating the unique landscape of the Yin-Yang Sea.

The region’s unique geology gives rise to the special landscape of the Yin-Yang Sea (Photo provided by Flying in the Sky)

Overlooking the stunning scenery of the Yin-Yang Sea (Photo provided by Flying in the Sky)

【Info】
Yin-Yang Sea at Shuishe Cave
Address: 78.2K on Provincial Highway 2, Ruifang District, New Taipei City, near Oyou Lü?
Transportation Information:
By Car
1. From Taipei – Take National Freeway 1 → Connect to the Wanjia Expressway (Provincial Highway 62) → Exit at Ruibin Interchange → Turn right onto the Coastal Highway to reach 78.2K on Provincial Highway 2
2. From Yilan – Travel along Provincial Highway 2 Coastal Highway → Head north via Dali, Fulong, Aodi, Bitou Cape, and Nanya to reach Shuishe Cave / 78.2K on Provincial Highway 2
 
Public Transport
By Train
1. Taipei → Get off at Sandiaoling Station
2. Transfer to the Pingxi Branch Line train at Ruifang or Houzhuang Train Stations → Get off at Sandiaoling Station
By Bus
1. Take the North-Link Railway to Ruifang Station → Then transfer to the Keelung Bus (Coastal Line) → Get off at Shuishe Cave Station
2. Take the Keelung Bus to Jinguashi from near Keelung Train Station → Get off at Jinguashi Station
 

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》http://www.mook.com.tw/article.php?op=articleinfo&articleid=14959

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