Damghan Earthquake :-
The '856 Damghan earthquake' or the '856 Qumis earthquake' occurred on 22 December , 856
(242 AH). The earthquake had an estimated magnitude of 7.9 and maximum intensity of X (Extreme) on the 'Mercalli' intensity Scale. The 'meizoseismal area (area of maximum damage)'
extended for about 350 kilometers (220 mi) along the southern edge of the eastern 'Alborz' mountains of present day 'Iran' including part's of "Tabaristen" and 'Gorgan' .The earthquake
epicenter is estimated to be close to the city of 'Damghan' which was then the capital of the 'Persian' province of 'Qumis' .It caused approximately 200,000 deaths and is listed by the 'USGS'
as the sixth deadliest earthquake in Recorded History......!
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