Top 5 Most Dangerous Volcanoes in the World

Located in Indonesia, Krakatoa is a volcanic island that stands approximately 813 meters (2,670 feet) tall and has erupted with significant force on multiple occasions. Its most infamous eruption occurred in 1883, causing a tsunami that killed an estimated 36,000 people in the surrounding area. The 1883 Krakatoa eruption was so powerful that it could be heard over 3,000 miles away, while its ash cloud reached as high as 43 kilometers (26 miles) into the atmosphere. During this time, the volcano's eruptions were accompanied by loud thunder-like sounds, which some described as a "year and a day" of deafening cacophony.

Located in the Democratic Republic of Congo, Mount Nyiragongo is one of Africa's most active and violent volcanoes. The volcano stands approximately 3,470 meters (11,384 feet) tall above sea level, with its slopes covered in a thick layer of fluid lava that moves at speeds of up to 100 km/h (62 mph). During the 1977 eruption, the lava flows reached temperatures of up to 800 degrees Celsius (1,472 degrees Fahrenheit), which were hotter than the surface of the sun. The volcano's unique geology also means that it has the potential to produce one of the largest and most destructive lava flows in history.

Located in the Philippines, Mount Pinatubo is a highly active stratovolcano that erupted in 1991 with significant force. The eruption was so powerful that it caused global cooling by releasing ash and sulfur dioxide into the atmosphere, which blocked sunlight and cooled temperatures worldwide. In fact, the impact of the 1991 eruption was so great that it affected air travel for several months, while also causing widespread destruction to the surrounding area. The volcano's summit is now covered in a layer of sulfuric acid, making it one of the most acidic environments on Earth.

Located near Naples, Italy, Mount Vesuvius is an active stratovolcano that has erupted over 20 times in recorded history. The infamous eruption of 79 AD caught the ancient Roman city of Pompeii off guard, burying its inhabitants under a thick layer of ash and pumice. Today, the volcano remains one of Europe's most dangerous and popular tourist attractions, with visitors able to explore its slopes and crater. However, the Italian government has implemented strict safety measures due to concerns over increased volcanic activity in recent years.

Located on the island of Bali in Indonesia, Mount Agung is a highly active stratovolcano that erupted in 1963 with significant force. The eruption caused widespread damage and displacement throughout Java and Bali, while also affecting air travel around the region. Today, the volcano remains an important cultural and spiritual site for the indigenous people of Bali, who have lived on the slopes of the mountain for centuries. In fact, Mount Agung was considered sacred by the Balinese people before its eruption, with many believing that it held mystical powers and a deep connection to their ancestors.