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Mount Ibu (Indonesian: Gunung Ibu) is a stratovolcano at the north-west coast of Halmahera island, Indonesia. The summit is truncated and contains nested craters. The inner crater is 1 km (0.62 mi) wide and 400 m (1,312 ft) deep, while the outer is 1.2 km (0.75 mi) wide. A large parasitic cone is at the north-east of the summit and a smaller one at the south-west. The latter feeds a lava flow down the west flank. A group of maars are on the western and northern side of the volcano.[1] Mount Ibu sits within the Pacific Ocean's "Ring of Fire" that has 127 active volcanoes.[3]
| Mount Ibu | |
|---|---|
 | |
| Highest point | |
| Elevation | 1,325 m (4,347 ft)[1] |
| Listing | Ribu |
| Coordinates | 1.488°N 127.63°E |
| Geography | |
  Mount Ibu Location of Mount Ibu in Indonesia | |
| Location | Halmahera, Indonesia |
| Geology | |
| Mountain type | Stratovolcano |
| Last eruption | October 18, 2024 (Ongoing) [2] |
| Climbing | |
| Easiest route | 84 |
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In August 2009, the Volcanological Survey of Indonesia raised the eruption alert level for Ibu to Orange/III.[4]
In 2023, a total of 21,100 eruptions were recorded from the volcano, making it the second most active volcano in Indonesia.[5]
On 16 May 2024, the Volcanological Survey of Indonesia raised its highest alert level (Red/IV) for Mount Ibu following another series of eruptions.[6] As a result, seven villages were evacuated.[7]
On 1 June 2024, Mount Ibu erupted at 11:03 WIT (02:03 GMT) for 265 seconds, producing a five kilometer (3 mile) high ash plume that dispersed towards the southwest[8][9] and deposited ash on the village of Gam Ici, where many evacuees displaced by previous eruptions had been relocated.[10] The Volcanological Survey of Indonesia warned of a potential for flash flooding and lahar flow in the region, and recommended that people move at least seven kilometers (~4.35 miles) away from the crater.[8]
On 6 June 2024, Mount Ibu erupted three more times, producing ash clouds as tall as 1,200 meters (4,000 feet).[11]
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