Extinct now, it last erupted 300,000 years ago during the most recent of the Tatunshan Range's three series of eruptions. As a result, most of the region's geothermal activity is concentrated here.
它是休火山，曾在卅萬年前爆發過，也是大屯山群三次火山爆發中離現在最近的一次，因此地裂線及硫氣孔都集中於此，且常年噴發硫氣。