Mount Agung

Mount Agung is Bali's highest mountain — a 3,031-metre active stratovolcano in East Bali's Karangasem Regency and, for Balinese Hindus, the most sacred place on the island. From a helicopter the cone is finally legible at full scale: the symmetrical sides, the eruption- scarred summit, and Pura Besakih clinging to its southwest flank.

Mount Agung — *Gunung Agung*, "the great mountain" — is the spiritual axis of Bali. In the Balinese cosmology, the gods reside on its summit; temples across the island are oriented toward it, and the directional vocabulary of Balinese architecture (*kaja* meaning "toward the mountain") is calibrated to its position. Pura Besakih, the **Mother Temple**, sits at roughly 1,000 metres on the southwest slope and is the principal of the six island temples that form Bali's spiritual hierarchy.

The mountain is geologically active. Its 1963–64 eruption was one of the largest of the 20th century in Indonesia — it killed more than a thousand people and reshaped East Bali's landscape. During that eruption the lava flow split around Pura Besakih and stopped at the temple boundary, which the Balinese took as a sign of divine protection. The most recent cycle ran from late 2017 to mid-2019, with ash columns that closed Denpasar airport intermittently and forced evacuations of villages within the exclusion zone.

The summit crater is now a deep, roughly circular pit roughly 500 metres across with steaming vents on its inner walls. From the ground only the cone is visible; from the air the crater floor is in view at last.

The helicopter approach to Mount Agung is the most dramatic flight on the volcanoes route. The mountain is taller than its surroundings by a wide margin — at cruise altitude you fly at roughly the same level as its mid-slopes, with the summit rising above you.