<Table> <Tr> <Th_colspan="2"> Mount Etna </Th> </Tr> <Tr> <Td_colspan="2"> Etna with the city of Catania in the foreground </Td> </Tr> <Tr> <Th_colspan="2"> Highest point </Th> </Tr> <Tr> <Th> Elevation </Th> <Td> 3,329 m (10,922 ft) (varies) </Td> </Tr> <Tr> <Th> Prominence </Th> <Td> 3,329 m (10,922 ft) Ranked 59th </Td> </Tr> <Tr> <Th> Isolation </Th> <Td> 999 kilometres (621 mi) </Td> </Tr> <Tr> <Th> Listing </Th> <Td> Ultra </Td> </Tr> <Tr> <Th> Coordinates </Th> <Td> 37 ° 45.3 ′ N 14 ° 59.7 ′ E ﻿ / ﻿ 37.7550 ° N 14.9950 ° E ﻿ / 37.7550; 14.9950 Coordinates: 37 ° 45.3 ′ N 14 ° 59.7 ′ E ﻿ / ﻿ 37.7550 ° N 14.9950 ° E ﻿ / 37.7550; 14.9950 </Td> </Tr> <Tr> <Th_colspan="2"> Geography </Th> </Tr> <Tr> <Td_colspan="2"> Mount Etna Metropolitan City of Catania in Sicily, Italy </Td> </Tr> <Tr> <Th_colspan="2"> Geology </Th> </Tr> <Tr> <Th> Age of rock </Th> <Td> 350,000--500,000 years </Td> </Tr> <Tr> <Th> Mountain type </Th> <Td> Stratovolcano </Td> </Tr> <Tr> <Th> Last eruption </Th> <Td> 16 March 2017 </Td> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Th_colspan="2"> UNESCO World Heritage Site </Th> </Tr> <Tr> <Th> Criteria </Th> <Td> Natural: viii </Td> </Tr> <Tr> <Th> Reference </Th> <Td> 1427 </Td> </Tr> <Tr> <Th> Inscription </Th> <Td> 2013 (37th Session) </Td> </Tr> <Tr> <Th> Area </Th> <Td> 19,237 ha </Td> </Tr> <Tr> <Th> Buffer zone </Th> <Td> 26,220 ha </Td> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> </Table> <Tr> <Th_colspan="2"> Mount Etna </Th> </Tr>

When was the last time mt etna erupted