In 2005, a rift of 500 metres (1,640 ft) long, and 60 metres (197 ft) deep was formed in just a few days when a volcano, situated in the north of what region, erupted?
The now-extinct Elephant Bird, believed to have been 3 metres tall and weigh 500 kg, was believed to have inhabited what area?
Ash from what volcano, when it erupted in June 2011, grounded flights in Chile, Bolivia, Argentina, Uruguay and Paraguay and disrupted air traffic over Australia and New Zealand?
The tiny area of Walvis Bay (a deep harbour) and the Penguin Islands in Namibia were under the control of which other country until 1994?
