The answer is Bahrain and Kuwait, both sources provide some evidence.
"https://en.wikipedia.org/wiki/History_of_Bahrain"
"https://en.wikipedia.org/wiki/Sheikhdom_of_Kuwait"
Between 50-80 years or even more than 80 sometimes
It could be because of a earthquake, which is formed when two of earth's plates crash into each other
The surface of Earth's moon is pockmarked with millions of craters left when asteroids and other space rocks crashed into its surface over millions of years. Sometimes, from Earth, the pattern of craters looks like a face peering down.
