This 8,200-foot giant in Alaska has just provided the key to the mystery behind the eruption of the most sneaky of volcanoes: the stealth type.

The colossal Mount Veniaminof in Alaska, standing at 2,507 meters, has long puzzled volcanologists with its deceptive behavior. This massive stratovolcano, partially hidden beneath glacial ice, represents one of the most perplexing volcanic…