Here is yet another roadside curiosity in the deep south of Taiwan: a false tunnel on the coastal plains of Fangshan, Pingtung. It doesn’t cut through any mountainside nor is it built to withstand landslides. It’s just an 1,180 meter tunnel that trains pass through for no discernible reason. I first read about this on Michael Turton’s blog and later saw it on my first round-the-island bicycle tour. More recently I took a spin around the southern loop once more, and spent a little extra time examining this concrete oddity in an attempt to divine its purpose.

Old Caoling Tunnel 舊草嶺隧道 was built in the 1920s to connect northern Taiwan with the eastern coast by rail. A new tunnel was built in the 1980s and the old tunnel was closed until 2008 when it reopened as a tourist-friendly bikeway. The main point of entry is Fúlóng 福隆, a beach town in New Taipei City about an hour outside of Taipei by train. Riding through the old tunnel makes for a great day trip from Taipei—as long as you don’t go on a weekend.