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Krakatau Volcano

Updated: Dec 11, 2024 05:15 GMT -
Caldera 813 m (2,667 ft.) / Anak Krakatau: 189 m
Sunda Strait, Indonesia, -6.1°S / 105.42°E
Current status: erupting (4 out of 5)
Last update: 24 Apr 2024 (Smithsonian / USGS Weekly Volcanic Activity Report)
Violent eruption of Krakatau showering the summit cone with incandescent bombs.
Violent eruption of Krakatau showering the summit cone with incandescent bombs.

Krakatau, a small island group in the Sunda Strait between the islands of Sumatra and Java is one of the world's most famous volcanoes. It is a mostly submerged caldera with 3 outer islands belonging to the rim and a new cone, Anak Krakatau, that has been forming a new island since 1927 and remains highly active.
Krakatau exploded spectacularly in a devastating Plinian eruption 1883 that killed more than 30,000 people (mostly by the huge tsunamis triggered by the eruption). The eruption was one of the first global news events after telegraph lines had connected the different continents.

[smaller] [larger]
Typical eruption style: Explosive. Construction of a cinder cone  island (Anak Krakatau) inside the caldera formed by the 1883 eruption. Frequent strombolian activity.
Krakatau volcano eruptions: 1530, 1680-81, 1684, 1883 (Plinian eruption), 1927-30, 1931-32, 1932-34, 1935, 1936, 1937, 1938-40, 1941, 1942, 1943, 1944, 1945, 1946, 1946-47, 1949, 1950, 1952, 1953, 1955, 1958-59, 1959-63, 1965(?), 1969(?), 1972-73, 1975, 1978, 1979, 1980, 1981, 1988, 1992-93, 1994-95, 1996, 1997, 1999, 2000, 2001, 2007-8, April 2009-early 2010, Oct 2010 - March 2011, July-Oct 2011, Jan-May + Sep 2012, 2015(?), 2017, 2018 (22 Dec eruption & tsunami), 2019-ongoing

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Background

The renowned volcano Krakatau (or Krakatoa) lies in the Sunda Strait between Java and Sumatra. Collapse of the ancestral Krakatau edifice, perhaps in 416 AD, formed a 7-km-wide caldera. Remnants of this ancestral volcano are preserved in Verlaten and Lang Islands; subsequently Rakata, Danan and Perbuwatan volcanoes were formed, coalescing to create the pre-1883 Krakatau Island. Caldera collapse during the catastrophic 1883 eruption destroyed Danan and Perbuwatan volcanoes, and left only a remnant of Rakata volcano. This eruption, the 2nd largest in Indonesia during historical time, caused more than 36,000 fatalities, most as a result of devastating tsunamis that swept the adjacent coastlines of Sumatra and Java. Pyroclastic surges traveled 40 km across the Sunda Strait and reached the Sumatra coast. After a quiescence of less than a half century, the post-collapse cone of Anak Krakatau (Child of Krakatau) was constructed within the 1883 caldera at a point between the former cones of Danan and Perbuwatan. Anak Krakatau has been the site of frequent eruptions since 1927.
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Source: GVP, Smithsonian Institution

Krakatau Volcano Photos

Latest satellite images

krakatau satellite image sat1krakatau satellite image sat2
Krakatau Volcano Tours
Java (Indonesia)
From Krakatau to Bali
16-day study and photo tour to Java, Indonesia
16 days / 15 nights - Easy to Moderate
Price 3180 €
Custom and group dates
12-28 May 2025
9-24 Jun 2025
7-22 Jul 2025
West Java (Indonesia)
Krakatau Volcano Special
expedition to study & observe Anak Krakatau volcano and its activity
3 -7 days - Easy
Price 1340 €
Custom and group dates
Flores, Indonesia
Indonesia Volcano Special
Volcano expedition to Lewotobi and Ile Lewotolok volcanoes in Feb 2024
7 days (10 days with extension) - Moderate
Price 1750 EUR (7d) / 2480 EUR (10d)
no scheduled dates at present

Krakatau Volcano Maps

Below is a selection of maps showing the location and surroundings of the volcano at various resolutions based on aerial-imagery / terrain maps. Feel free to use them for non-commercial purposes on your blog or website as long as you credit them with a link back to this page (click to copy it).
Satellite/aerial-type map of Krakatau volcano (world scale)
Satellite/aerial-type map of Krakatau volcano (world scale)
Terrain-type map of Krakatau volcano (world scale)
Terrain-type map of Krakatau volcano (world scale)
Satellite/aerial-type map of Krakatau volcano (region scale large)
Satellite/aerial-type map of Krakatau volcano (region scale large)
Terrain-type map of Krakatau volcano (region scale large)
Terrain-type map of Krakatau volcano (region scale large)
Satellite/aerial-type map of Krakatau volcano (region scale medium)
Satellite/aerial-type map of Krakatau volcano (region scale medium)
Terrain-type map of Krakatau volcano (region scale medium)
Terrain-type map of Krakatau volcano (region scale medium)
Satellite/aerial-type map of Krakatau volcano (region scale small)
Satellite/aerial-type map of Krakatau volcano (region scale small)
Terrain-type map of Krakatau volcano (region scale small)
Terrain-type map of Krakatau volcano (region scale small)
Satellite/aerial-type map of Krakatau volcano (local scale large)
Satellite/aerial-type map of Krakatau volcano (local scale large)
Terrain-type map of Krakatau volcano (local scale large)
Terrain-type map of Krakatau volcano (local scale large)
Satellite/aerial-type map of Krakatau volcano (local scale medium)
Satellite/aerial-type map of Krakatau volcano (local scale medium)
Terrain-type map of Krakatau volcano (local scale medium)
Terrain-type map of Krakatau volcano (local scale medium)
Satellite/aerial-type map of Krakatau volcano (local scale small)
Satellite/aerial-type map of Krakatau volcano (local scale small)
Terrain-type map of Krakatau volcano (local scale small)
Terrain-type map of Krakatau volcano (local scale small)
Satellite/aerial-type map of Krakatau volcano (scale of 10s of km)
Satellite/aerial-type map of Krakatau volcano (scale of 10s of km)
Terrain-type map of Krakatau volcano (scale of 10s of km)
Terrain-type map of Krakatau volcano (scale of 10s of km)
Satellite/aerial-type map of Krakatau volcano (scale of 20-40 km)
Satellite/aerial-type map of Krakatau volcano (scale of 20-40 km)
Terrain-type map of Krakatau volcano (scale of 20-40 km)
Terrain-type map of Krakatau volcano (scale of 20-40 km)
Satellite/aerial-type map of Krakatau volcano (scale of approx. 10-20 km)
Satellite/aerial-type map of Krakatau volcano (scale of approx. 10-20 km)
Terrain-type map of Krakatau volcano (scale of approx. 10-20 km)
Terrain-type map of Krakatau volcano (scale of approx. 10-20 km)
Satellite/aerial-type map of Krakatau volcano (scale of 5-10 km)
Satellite/aerial-type map of Krakatau volcano (scale of 5-10 km)
Satellite/aerial-type map of Krakatau volcano (scale of few kilometers)
Satellite/aerial-type map of Krakatau volcano (scale of few kilometers)
NASA satellite image of the Sunda Strait, Indonesia
NASA satellite image of the Sunda Strait, Indonesia
NASA satellite image of the island group of Krakatau.
NASA satellite image of the island group of Krakatau.
Close-up of Anak Krakatau volcanic island, with its recent lava flows well visible.
Close-up of Anak Krakatau volcanic island, with its recent lava flows well visible.

Krakatoa - the world's most infamous volcano

The island group of Krakatoa (or Krakatau) lies in the Sunda Strait between Java and Sumatra.  Krakatoa is infamous for its violent Plinian eruption in 1883, that destroyed the previous volcanic edifice and enlarged its caldera.
Collapse of the former volcanic edifice, perhaps in 416 AD, had formed a 7-km-wide caldera.  Remnants of this ancestral volcano are preserved in Verlaten and Lang Islands; subsequently Rakata, Danan and Perbuwatan volcanoes were formed, coalescing to create the pre-1883 Krakatoa island.  Caldera collapse during the catastrophic 1883 eruption destroyed Danan and Perbuwatan volcanoes, and left only a remnant of Rakata volcano. 
This eruption, the 2nd largest in Indonesia during historical time (the most violent being the eruption of Tambora in 1815), caused more than 36,000 fatalities, most as a result of devastating tsunamis that swept the adjacent coastlines of Sumatra and Java.  Pyroclastic surges traveled 40 km across the Sunda Strait and reached the Sumatra coast.  After a quiescence of less than a half century, the post-collapse cone of Anak Krakatoa ("Child of Krakatoa") was constructed within the 1883 caldera at a point between the former cones of Danan and Perbuwatan.  Anak Krakatau has been the site of frequent eruptions since 1927.


(adapted from GVP)


West Java (Indonesia)
Krakatau Volcano Special
expedition to study & observe Anak Krakatau volcano and its activity
3 -7 days - Easy
Price 1340 € $£¥
Custom and group dates
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Wed, 24 Apr 2024, 14:00

Krakatau volcano (Sunda Strait) - Smithsonian / USGS Weekly Volcanic Activity Report for 17 April-23 April 2024 (Continuing Activity)

On 19 April PVMBG lowered the Alert Level for Krakatau to 2 (on a scale of 1-4) based on visual observations and instrumental data. The public was warned to stay at least 2 km away from the crater. ... Read all
Wed, 20 Dec 2023, 15:00

Krakatau volcano (Sunda Strait) - Smithsonian / USGS Weekly Volcanic Activity Report for 13 December-19 December 2023 (Continuing Activity)

PVMBG reported that the eruption at Krakatau continued during 13-19 December. White-and-gray ash plumes that were sometimes dense rose as high as 1 km above the summit and drifted NE and N during 13-16 December. Some webcam images posted with the daily reports showed incandescence at the vent. ... Read all
Krakatau erupting on May 27, 1883. From Symons, G., 1888, The Eruption of Krakatau and Subsequent phenomena: Reports of the Krakatau Committee of the Royal Society, Trubner, London.
Krakatau erupting on May 27, 1883. From Symons, G., 1888, The Eruption of Krakatau and Subsequent phenomena: Reports of the Krakatau Committee of the Royal Society, Trubner, London.
Spectacular explosion in Oct 2018

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