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However, in Jaufre, while it is clear from her name that the fairy queen in question is Morgan le Fay, the rich underworld queendom of which she is the mistress is accessed, not through a fiery grotto on the slopes of Etna, but through a 'fountain' ( i.e.

a spring ) – a circumstance more in keeping with Morgan's original watery, rather than fiery, associations, before her incorporation into the folklore of Sicily.

Ash from these eruptions has been found as far away as south of Rome's border, 800 km (497 mi) to the north.

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The most recent collapse event at the summit of Etna is thought to have occurred about 2,000 years ago, forming what is known as the Piano Caldera.

This caldera has been almost entirely filled by subsequent lava eruptions, but is still visible as a distinct break in the slope of the mountain near the base of the present-day summit cone.

Ripley (film).) is an active stratovolcano on the east coast of Sicily, Italy, in the Metropolitan City of Catania, between the cities of Messina and Catania.

It lies above the convergent plate margin between the African Plate and the Eurasian Plate.

Summit eruptions can be highly explosive and spectacular, but rarely threaten the inhabited areas around the volcano.

In contrast, flank eruptions can occur down to a few hundred metres altitude, close to or even well within the inhabited areas.Mediaevalist Roger Sherman Loomis quotes passages from the works of Gervase of Tilbury and Caesarius of Heisterbach ( dating from the late twelfth century ) featuring accounts of Arthur's returning of a lost horse which had strayed into his subterranean kingdom beneath Etna.Caesarius quotes as his authority for the story a certain canon Godescalcus of Bonn, who considered it a matter of historic fact of the time of Emperor Henry's conquest of Sicily circa 1194.The growth of the mountain was occasionally interrupted by major eruptions, leading to the collapse of the summit to form calderas.From about 35,000 to 15,000 years ago, Etna experienced some highly explosive eruptions, generating large pyroclastic flows, which left extensive ignimbrite deposits.The fertile volcanic soils support extensive agriculture, with vineyards and orchards spread across the lower slopes of the mountain and the broad Plain of Catania to the south.

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