Chacaltaya glacier, Bolivia
Daring skiers would once have dreamed of ticking the notoriously tough Chacaltaya mountain, the highest ski resort in the world, off their bucket lists. The ancient glacier which sits within it spanned more than 2,000 square feet back in 1940 but rapidly decreased in size over the years until 2009, when it completely melted away.
In 1998 experts predicted the glacier would survive until 2015 but due to climate change, it melted six years earlier than estimated. Now, Chacaltaya is pretty barren, but despite the lack of skiing it remains a popular spot for mountaineers looking to hike its summit.
