Makhtesh Ramon - The Ramon Crater

The Ramon Crater in Israel's south is the world's largest "makhtesh- 40 kilometers long, between 2-10 kilometers wide and 500 meters deep.

It wasn't made by a meteor or a volcano, but rather, it was created by erosion. There once was an active volcano in the northern end.

There are 5 Makhteshim in Israel, and 2 more in the Sinai.