Just 40 years before the destructive Ardabil quake, Damghan was shook to pieces, causing the death of around 200,000 people.
At the time, Damghan was the capital of Iran before it was hit with a magnitude 8.0 earthquake.
Damghan is located in upper Iran, not far from Ardabil, so of course their catastrophic quakes were no coincidence.
In fact, they lie on the Alpide earthquake belt, the world's second-most seismically active area. It accounts for 17% of the world's largest earthquakes and 6% of the world's total quakes.