When walking by the holes it's best to watch one's step; the temperature ranges from 90 to 120 degrees Centigrade, hot enough to boil an egg. Many of the geysers are quite large. One with a height of 100 meters continually roars like an explosion.
最大的「小油坑孔」位於山腰，噴出的硫氣半徑達一百多公尺，並不斷發出爆炸似的聲響。