Narusawa Ice Cave, a trace of the frozen Mount Fuji eruption

The average temperature in the Narusawa Ice Cave is around 37 degrees Fahrenheit, causing it to freeze throughout the year. (Amana Images Inc. Via Alamy) The Narusawa Ice Cave is a natural lava tube at the foot of Mount Fuji, Japan. In this cave, there are ice and pillars of ice that are formed naturally. […]