<Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (January 2010) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (January 2010) (Learn how and when to remove this template message) </Td> </Tr> <Table> <Tr> <Th_colspan="2"> Mount Nyiragongo </Th> </Tr> <Tr> <Td_colspan="2"> An aerial view of volcanic peak </Td> </Tr> <Tr> <Th_colspan="2"> Highest point </Th> </Tr> <Tr> <Th> Elevation </Th> <Td> 3,470 m (11,380 ft) </Td> </Tr> <Tr> <Th> Coordinates </Th> <Td> 1 ° 31 ′ S 29 ° 15 ′ E ﻿ / ﻿ 1.517 ° S 29.250 ° E ﻿ / - 1.517; 29.250 Coordinates: 1 ° 31 ′ S 29 ° 15 ′ E ﻿ / ﻿ 1.517 ° S 29.250 ° E ﻿ / - 1.517; 29.250 </Td> </Tr> <Tr> <Th_colspan="2"> Geography </Th> </Tr> <Tr> <Td_colspan="2"> Mount Nyiragongo Democratic Republic of the Congo </Td> </Tr> <Tr> <Th> Parent range </Th> <Td> Virunga Mountains </Td> </Tr> <Tr> <Th_colspan="2"> Geology </Th> </Tr> <Tr> <Th> Mountain type </Th> <Td> Stratovolcano </Td> </Tr> <Tr> <Th> Last eruption </Th> <Td> 2002 to 2015 </Td> </Tr> </Table> <Tr> <Th_colspan="2"> Mount Nyiragongo </Th> </Tr>

When was the last time mount nyiragongo erupted