Mt Galunggung is a volcano with 2,167 m above sea level. It is located about 17 km from Tasikmalaya. There are several objects offered, that is forest-tour in at least 120 hectares area under Bureau of Forestry management, hot water bathing place completed with swimming pool, bathroom and hot water tub facilities. Mt Galunggung is a volcano near to Tasikmalaya city. The volcano erupted in 1990 and spread its rain of ash to entire Indonesia and neighboring countries.

An easy trip from Tasikmalaya by minibus, motorcycle ride and then a two-hour walk is Mount Galunggung. An active volcano that erupted less than ten years ago is worth a look-see. Hike around the “Golden Crater” of Mount Papandayan, southwest Garut, which is an active steam-hissing volcano. The mountain is named after its bright-yellow sulfur deposits and gains its fame, or infamy, due to its highly active and potentially dangerous steaming geysers and poisonous gases. Be careful when walking around the volcano’s rim.

The last major eruption on Galunggung was in 1982, which had a Volcanic Explosivity Index of 4 and killed 68 people. This eruption also brought the dangers of volcanic ash to aviation to worldwide attention, after two Boeing 747 passenger jets flying downwind of the eruption suffered temporary engine failures and damage to exterior surfaces, both planes being forced to make emergency landings at Jakarta.

One, a British Airways aircraft carrying 240 passengers, accidentally entered the ash cloud during night time in June 1982 150 km downwind of the volcano. All four engines failed and the aircraft descended for 16 minutes, losing 7500 metres of its 11500 metre altitude, until the crew managed to restart the engines.

The following month a Singapore Airlines aeroplane with 230 passengers aboard also inadvertently entered the cloud at night time, and three of its four engines stopped. The crew succeeded in restarting one of the engines after descending 2400 metres. Both aircraft suffered serious damage to their engines and exterior surfaces. A hummocky deposit known as the Ten Thousand Hills of Tasikmalaya attracted the attention of early 20th century geologists. Houses were built on the hummocks since they provided good defence against hostile people, and being above the paddy fields were free of mosquitoes and rats.

Originally, it was thought that either it had been formed by a lahar caused by the release of the waters of the crater lake, or that it was man-made; composed of rocks and boulders dumped there after being cleared from paddy fields. However, in the light of the Mount St. Helens eruption of 1980 and from examination of the Mount Shasta deposits it has become clear that the hummocks are a debris-avalanche deposit. Like these mountains, Galunggung has a horseshoe-shaped crater indicating a massive landslide, and examination of shattered lava blocks revealed them to be similar to deposits on the other two volcanoes. According to radiocarbon dating of samples taken from a lava flow the landslide happened within the last 23,000 years.


Sumber :


Leave a Reply