Mount Agung is located on the island of Bali in Indonesia. It is on the eastern side of this island. Mount Agung is a strato(composite) volcano. Mount Agung's most recent eruption was in 1963.

Very Explosive

Mount Agung at 10,308 feet in elevation.

Depending on your definition of "about to", there may be dozens of them. But probably you're referring to Bali's Mount Agung in Indonesia. Mount Agung last erupted in 1963, killing over 2,000 people, but recent rumblings have caused the authorities to declare evacuations for about 200,000 people.

Agung Udijana goes by Agung.