Climate
Mount Agung dominates the surrounding area influencing the climate. The clouds come from the west and Agung takes their water so that the west is lush and green and the east dry and barren.
The best time to climb Mount Agung is in the dry season of April to October. January and February should certainly be avoided if possible due to heavy rain, possible flooding and even landslides in the area.
At lower elevations it remains tropical but becomes distinctly cold and often very windy on the high bare rock slopes.
Understand
Towering 3,142 metres above sea level, Mount Agung is the highest mountain on the island of Bali and the fifth highest volcano in the whole of Indonesia.
Mount Agung has huge spiritual significance to the people of the island, and is home to the 'Mother Temple' of Besakih. It forms part of a chain of volcanos that make up the back bone of Bali.
Balinese legend has it that Agung was created when the Hindu God Pasupati split Mount Meru the spiritual axis of the universe and formed Mount Agung with a fragment.
Flora and fauna
Wild pigs and macaques abound on the forested slopes of Mount Agung. Birdlife is impressive including frequent sightings of hawks and eagles, but is not as obvious and easy to observe as in the West Bali National Park.
Landscape
At lower elevations the mountain is covered in lush forest, but this soon gives way to a desolate landscape of barren volcanic rock and ash scree. From the peak of Mount Agung the views are extraordinary in all directions, but perhaps most dramatic to the east where the sun rises above Mount Rinjani on Lombok.
The Events of 1963
Mount Agung last erupted in 1963, causing devastation in the eastern part of Bali and beyond.
Ancient Balinese texts demand that the most important of Balinese Hindu rituals, the Eka Dasa Rudra, is performed every 100 years to purify our world. Such a ceremony was scheduled at Besakih temple in 1963. In February of that year Mount Agung started to rumble, and high priests argued that this was a bad omen from the Gods and that the wrong date had been scheduled for the ceremony. By this time though President Sukarno had arranged to attend with a group of foreign dignatories and he ordered that the event must go ahead.
On March 8th the mountain was in a full pre-eruption phase and on March 18th it blew with such force that the top 100 metres or more was blasted away. Lava spewed over much of eastern Bali, a devastating gas cloud swept across villages and ash destroyed all crops. Up to 2,000 people are thought to have died and tens of thousands of homes were destroyed. Quite remarkably, the mother temple of Besakih perched high on the slopes of the mountain was relatively untouched by this event, fuelling the local spritual reasoning for the eruption. Further, many Balinese argued that this eruption was a portent of dreadful things to come and felt vindicated when the whole nation was plunged into civil crisis in 1965.
The cleansing rituals from the 1963 ceremonies were finally finished at Besakih in 1979.
History
Mount Agung last erupted in 1963 see information box in this article. This was one of the largest 20th century eruptions anywhere in the world.Historical eruptions of the volcano are poorly recorded, but there was certainly one in the 1820s.