Xiaoyoukeng 小油坑
2025 年 4 月 9 日帶女兒來小油坑。小油坑位於七星山西北麓，海拔約 805 公尺，是陽明山國家公園內的一處後火山活動地質景觀區，它以「後火山作用」所形成的噴氣孔、硫磺結晶、溫泉及壯觀的崩塌地形最具特色。其成因乃火山活動終止之後，地底下殘留的熱能加熱殘留的氣體，使地底下累積的蒸氣壓力增大，最後在火山口或斷層附近爆破地面而出，小油坑即為後火山作用形成的凹口式火山活動地形，噴氣孔終年有硫氣與蒸氣噴出，溫度頗高。2022 年 7 月 12 日我們也曾來過此地，以下照片是這兩次出遊的照片。
On April 9, 2025, we brought our daughter to Xiaoyoukeng. Xiaoyoukeng is located on the northwestern slope of Mt. Qixing at an elevation of approximately 805 meters above sea level. Situated within Yangmingshan National Park, it is a prominent post-volcanic geological landscape known for its active fumaroles, sulfur crystals, hot springs, and dramatic collapse terrain—all shaped by residual volcanic activity. The area's formation resulted from heat retained underground after volcanic eruptions ceased. This residual thermal energy heated trapped gases, increasing underground steam pressure until it eventually escaped through surface faults or near the former crater. The resulting landscape is a concave terrain shaped by these post-volcanic processes. Today, Xiaoyoukeng remains active, with fumaroles continuously emitting sulfur and steam at high temperatures year-round. We were also here on July 12, 2022, and the following photos are from both outings.
Lengshuikeng 冷水坑
冷水坑位於七星山東南山麓，海拔約 740 公尺，原本是個湖泊，後因湖水外流乾涸、湖底露出形成窪地，也因溫泉溫度只有40℃，遠低於其他地區泉溫度而得名。另有一說，因此處有一石穴湧泉，水質純淨不含硫和鐵成份，清澈見底、水溫冷涼，故名冷水坑。2025 年我們直接從小油坑開車到擎天崗。而 2022 年我們則由小油坑到冷水坑走冷擎步道至擎天崗。這是 2022 年的記錄。冷擎步道全程約 1.6 公里，7 月時可聽到唧唧的蟬鳴，雖然不到震耳欲聾的地步，但是也蠻震撼的。剛踏上冷擎步道，迎接我們的是美麗的落羽松，沒多遠就有一個叉路去牛奶湖。之後穿梭於蓊鬱的闊葉森林間，看到不少昆蟲及植物，讓這次的健行增加不少趣味。
Lengshuikeng is located at the southeast slope of Mt. Qixing, about 740 meters above sea level. It was originally a lake, but later the lake dried up and the lake bottom was exposed to form a depression. It was also named because the hot spring temperature is only 40℃, which is much lower than the spring temperature in other areas. Another theory is that there is a spring in a stone cave here, the water is pure and does not contain sulfur and iron; it is clear and the water temperature is cold, so it is named Lengshuikeng. In 2025, we drove directly from Xiaoyoukeng to Qingtiangang. In 2022, we took the Lengqing Trail from Xiaoyoukeng to Lengshuikeng and then to Qingtiangang. This is a record of 2022. The Lengqing Trail is about 1.6 kilometers long. In July, you can hear the chirping of cicadas. Although it is not deafening, it is still quite loud. As soon as we set foot on the Lengqing Trail, we were greeted by beautiful bald cypresses. Not far away, there was a fork in the road to Milk Lake. Afterwards, we walked through the lush broad-leaved forest and saw many insects and plants, which made this hike more interesting.
Milk Lake is actually the only sedimentary sulfur deposit in Taiwan. The Milk Lake Observation Deck is located on the bowl-shaped edge of the volcanic crater. Although the volcano has stopped its activity, low-temperature hot springs are still flowing out of the crater below. The sulfur particles released by the volcano have long accumulated at the bottom of the lake, forming the only sedimentary sulfur deposit in Taiwan.
Jingshan Suspension Bridge is the only suspension bridge in Yangmingshan National Park. The stream with a sulfur smell under the bridge is Lengshuikeng Creek, a tributary of the source of Shuangxi River. Many aquatic and wetland plants grow in it, such as bog bulrush, common rush, feathery bogmoss, etc.
From the ecological pond to Qingtiangang, the landscapes and creatures seen along the way.
The last photo is the Pomponia linearis, I was very excited to get a close up photo and video of it.
We are almost at Qingtiangang.
When you see the cattle-avoiding piles (to avoid chasing by the wild cattles), you have reached the other end of the Lengqing Trail - Qingtiangang. There was no shade on the prairie, and the sun was shining brightly in July. I actually got heatstroke. I finally made it to the visitor center to enjoy some air conditioning and wait for my friend to go back to Lengshuikeng to get the car to pick us up.
Qingtiangang 擎天崗
擎天崗位居於大屯火山群峰的中央位置，昔日稱大嶺或牛埔，自清領末期及日治時期以來便是牛隻放牧的重要場域。日治時期擎天崗及其它地方被劃設為「大嶺峠牧場」，實施耕牛寄養制度，極盛時期約有1,600 頭牛寄養於此。放牧的牛隻主要以 4~10 月寄養的耕牛-水牛為主，11 月後由牛主人領回平地自行照顧。隨著農業機械化後，放牧產業逐漸沒落牛隻數量大減，有些未被帶回的水牛，形成無主野化水牛群，它們的野性防衛心強，遊客需注意安全。最初為放牧引進栽植類地毯草，近來雖草原植被逐漸被其它植物取代，綠草如茵連綿的草原，仍是最受民眾喜愛的踏青處。以下是 2022 及 2025 年的照片。
Qingtiangang is located at the heart of the Datun volcanic peaks. Formerly known as Daling or Niupu, it has served as a significant cattle grazing area since the late Qing Dynasty and throughout the Japanese colonial period. During the Japanese colonial period, Qingtiangang and surrounding areas were designated as part of the "Daling Pass Ranch," where a cattle fostering system was implemented. At its peak, the area supported around 1,600 head of cattle. Grazing primarily occurred from April to October, after which the cattle were brought back to lower elevations by their owners to be cared for during the colder months. With the advent of agricultural mechanization, the grazing industry gradually declined, leading to a significant decrease in cattle numbers. Some buffaloes that were not reclaimed eventually became feral, forming wild herds. These buffaloes have developed strong defensive instincts, so visitors are advised to exercise caution. Originally, carpet grass was planted to support grazing, but over time the grassland vegetation has been gradually replaced by other plant species. Despite these changes, Qingtiangang’s lush, open meadows remain a favorite destination for outdoor activities and scenic outings. Here are the photos from 2022 and 2025.
In the evening of 2025, we feasted on delicious food at the Michelin Bib Gourmand-recommended "Songzhu Garden" (No. 546, Yonggong Road, Shilin District, Taipei City).
References 參考資料
- 陽明山國家公園: 小油坑
- 維基百科: 小油坑
- 陽明山國家公園: 冷水坑
- 陽明山國家公園: 擁抱陽明山系列－冷擎步道-解說據點-牛奶湖等
- 陽明山國家公園: 擎天崗
Travel/Point of Interest Posts 旅遊景點帖子
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