Iceland volcano: Bardarbunga hit by 5.7 earthquake BBC - August 26, 2014
Iceland's Bardarbunga volcano was hit by a magnitude 5.7 earthquake on Tuesday morning, the largest since tremors began in the area last week. The country's Met Office said despite the shock - the fourth magnitude five quake in 48 hours - there is still no sign of a volcanic eruption. On Sunday, Iceland lowered the aviation risk to its second highest level. Iceland's Eyjafjallajokull volcano erupted in 2010, producing ash that disrupted air travel across Europe. Bardarbunga is in a different range to Eyjafjallajokull, but the intense seismic activity has raised fears that an eruption could cause similar travel chaos.
Krakatoa is a volcanic island situated in the Sunda Strait between the islands of Java and Sumatra in Indonesia. The name is also used for the surrounding island group comprising the remnants of a much larger island of three volcanic peaks which was obliterated in a cataclysmic 1883 eruption, unleashing huge tsunamis (killing more than 36,000 people) and destroying over two-thirds of the island. The explosion is considered to be the loudest sound ever heard in modern history, with reports of it being heard up to 3,000 miles (4,800 km) from its point of origin. The shock waves from the explosion were recorded on barographs around the globe. In 1927 a new island, Anak Krakatau, or "Child of Krakatoa", emerged from the caldera formed in 1883 and is the current location of eruptive activity.