Is that a rock ?
Why have they built circular steps around it ??
What is special about that rock ???
Actually what you are looking at is a Meteorite which has no Crater !!! Yes, no crater. Hoba Meteorite which is the largest single piece meteorite made-up-of Iron known on the surface of the Earth. It has been named after the 'Hoba farm' on which it was discovered in 1920 accidentally by Jacobus Hermanus Brits, owner of the farm while ploughing with his ox.
This Meteorite is thought to have fallen about 80,000 years ago and weights 60 tons in the region of Otjozondjupa of Namibia. This meteorite has left no crater because of the fact that it fell at a terminal velocity estimated to be about 320 meter per second.
Since the meteorite was flat on its both the sides, it may have skipped on the atmosphere in the way a flat stone skips on water. Thus reducing its velocity and resulting in no crater.
At the time of discovery it weighed about 66 tons. But at present it weighs 60 tons due to scientific sampling and vandalism. To prevent further vandalism it was declared as National monument of Namibia.