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New Islands Emerge After Anak Krakatau Eruption
खबर में क्यों?
Two new islands appeared in the Sunda Strait: the Krakatau volcanism facts GS-I Geography expects you to know
An Anak Krakatau eruption in the Sunda Strait has thrown up two new islands.
Why it matters: factual, Prelims-type

What you need to know
2 मिनट
Two new islands have emerged off Indonesia's Anak Krakatau volcano after a continuous eruption between 4 and 6 September 2026.
The formations were first noticed by mariners.
Anak Krakatau rises in the Sunda Strait, at the site of the 1883 Krakatau eruption.
स्रोत: Topper IAS editorial (PIB / The Hindu / Indian Express)
मुख्य तथ्य
Remember these
- Two new islands emerged off Anak Krakatau after a continuous eruption between 4 and 6 September 2026
- Mariners were the first to notice the new formations
- Anak Krakatau rises in the Sunda Strait, between Java and Sumatra, Indonesia
- It sits at the site of the catastrophic 1883 Krakatau eruption
- Anak Krakatau means 'child of Krakatau'; it emerged from the caldera left by the 1883 eruption
प्रीलिम्स · मेन्स
How the exam will ask it
प्रीलिम्स
- Anak Krakatau is a volcanic island located in the Sunda Strait between Java and Sumatra.
- Anak Krakatau grew in the caldera formed by the 1883 Krakatau eruption.
- Indonesia lies on the Pacific Ring of Fire, a belt of intense volcanic and seismic activity.
- Volcanic islands can form when repeated eruptions pile up lava and ash above sea level.
मेन्स
GS-I Geography (physical geography: volcanism). Issue: eruptions can build new landforms, as at Anak Krakatau, but also threaten shipping and coastal areas through ashfall and tsunamis. Provision/policy: monitoring of volcanoes and early-warning systems along the Ring of Fire. Implication: coastal communities and sea lanes face risk. Way forward: continuous monitoring, hazard mapping and regional disaster-preparedness cooperation.
Quick recall
Answer before you reveal
Anak Krakatau, the volcano whose recent eruption created new islands, lies in which strait?
- Strait of Malacca
- Lombok Strait
- Makassar Strait
- Sunda Strait
उत्तर देखें
उत्तर: D — Correct: Sunda Strait — Anak Krakatau rises from the Sunda Strait between Java and Sumatra, on the site of the 1883 Krakatau eruption. • Strait of Malacca — wrong: The Strait of Malacca separates the Malay Peninsula from Sumatra and has no Krakatau volcano. • Lombok Strait — wrong: The Lombok Strait lies between Bali and Lombok, east of Java, and does not hold Krakatau. • Makassar Strait — wrong: The Makassar Strait separates Borneo from Sulawesi, far from Krakatau.
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