The largest known meteorite ever to hit the planet is thought to have done so approximately 80,000 years ago when it landed in a remote part of Namibia. It was only unearthed many centuries later, in 1920, when a farmer tilling his fields stumbled upon it. It was excavated but not transported due to its stupendous weight of approximately 60 tons, and today, it can still be viewed at the original site of its discovery. Thought to be between 200 and 400 million years old, it is the biggest organic chunk of iron known to man, but it also contains traces of substances which do not occur naturally on Earth. It measures roughly three metres by three metres, with an average thickness of approximately one metre.