Travel
How Taipei discovered an active volcano on its doorstep

Steam billows from cracks in rocks stained a sickly yellow-green. Pools of cloudy water bubble like a pan on the boil. The sharp stench of sulphur laces the air. This smouldering moonscape is Xiaoyoukeng, an impressive collection of steam vents in Yangmingshan National Park, an 11,000-hectare (42 …