Fri, Jan 12, 2018 - Page 13 News List

Off the Beaten Track: Into the Wormhole

One of New Taipei City’s most unusual natural wonders lies just below a popular road, yet was little-known until a couple of years ago

By Richard Saunders  /  Contributing reporter

The Wormhole is a small but very beautiful slot canyon in New Taipei City.

Photo: Richard Saunders

A few of Taiwan’s more remarkable sights are hidden in plain sight, but of all the readily-accessible wonders I’ve visited in the last few years, the Wormhole (蚯蚓坑) in New Taipei City’s Yongding District (永定) is probably the most startling.

Known mostly to locals up until a few years ago, the Wormhole today draws a steady stream of visitors year-round, but especially on hot summer weekends when it might be best to avoid the place unless you like company.


The Wormhole is a tiny slot canyon, a form of geological curiosity that’s surprisingly common in Taiwan. There are several other examples in the Taipei area. An outstandingly narrow and impressive one on a tributary of the Keelung River near New Taipei City’s Pingxi District (平溪) remains little-known, which is probably for the best, since it can only be reached by a strenuous river trace, and is potentially very dangerous, considering the area’s propensity for flash floods.

Safer and much easier to visit is the very small but atmospheric Chauyin Cave (潮音洞) on the slopes of Guanyin Mountain (觀音山) across the river from New Taipei City’s Tamsui District (淡水), and the gorge below the lovely Budong Waterfall (不動瀑布), just a short bus ride from the hot springs in Taipei’s Xinbeitou in Beitou District (北投). The Wormhole, however, is in a class of its own.

The slot canyon is just a couple of minutes from County Road 106, right on the popular bus route 795 between Muzha and Pingxi districts. Get off at Huangdidian (皇帝殿站) bus stop. Walk along the road away from Taipei for 200 meters, through the little village of Yongding, and take the road on the left, downhill to a bridge across the Yongding Creek (永定溪). Immediately before the bridge take a short path on the right, down through the trees to the edge of the little gorge just upstream from the Wormhole.

Anywhere else this fine little glen would be the main attraction, and it’s a great place to explore. It’s also a safer place than the Wormhole for less experienced swimmers, as the water isn’t as deep, and there are plenty of rocks to hold onto. Now is the time (before getting into the water) to check the condition of the stream. If it looks especially fast-flowing or high, don’t go any further to avoid any problems once you swim into the Wormhole.

Assuming the stream is fairly low, climb carefully down the slippery rockface above the water’s edge using the fixed rope, and cross the stream to the rocks on the other side. Follow the far bank down a few meters, then either re-cross the stream to the near bank and another patch of rocks at the eastern entrance to the Wormhole, or get straight into the water and swim under the bridge and into it.


The Wormhole is a small but very beautiful slot canyon about 150 meters long, where the waters of the stream run deep and (usually) slowly. The walls, weirdly eroded into a sequence of smooth curves by countless summer floods, rise sheer above the emerald-green water, and are covered in a film of algae and fine moss.

About halfway through, a flat platform of rock just above the water level is a welcome place for a quick rest, and another 50 meters downstream, at the western end of the canyon, a tributary plunges over its side into the main stream via a rather beautiful waterfall.

Just after the waterfall the gorge abruptly ends, swimmers can once more touch the riverbed and a high bridge spans the gorge. Wade downstream a bit further and (apparently) it’s possible to climb out of the gorge and back to the road, avoiding the swim back upstream. But don’t count on this, and be sure to allow enough energy to swim back (against the current) to the beginning.

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