Massive volcano that scientists can't find

[knocker]

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It was 10 October 1465 – the day of the hotly anticipated wedding of King Alfonso II of Naples. He was set to marry the sophisticated Ippolita Maria Sforza, a noblewoman from Milan, in a lavish ceremony. As she entered the city, the crowds gasped. Before them was a sight so strange and beautiful, it was like nothing they had ever seen before.

Alas, they weren’t staring at the bride to be – they were looking up at the sky. Though it was the middle of the day, the Sun had turned a deep azure, plunging the city into eerie darkness. Rumours began to spread – was it a solar eclipse? As the early dusk lingered on, others suggested it could be a consequence of the weather. After all, they’d had a particularly wet autumn and some claimed they had seen a thick, humid fog rise up into the sky.

http://www.bbc.com/future/story/20170630-the-massive-volcano-that-scientists-cant-find?ocid=ww.social.link.twitter