“The roar was also like coming down in circles of about 1-2 km diameter, as if a huge airplane or jet was circling above our heads for 6 to 8 minutes (and then another 6 to 8 minutes with a 5 minute break in between), but compared to airplane noise we know, this was 100 times louder.”
— Richard, I. T. Architecture Software Designer, Vienna, Austria
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