<Table> <Tr> <Th_colspan="2"> Mount Rainier </Th> </Tr> <Tr> <Td_colspan="2"> Mount Tacoma (Lushootseed) </Td> </Tr> <Tr> <Td_colspan="2"> Mount Rainier as viewed from the northeast . </Td> </Tr> <Tr> <Th_colspan="2"> Highest point </Th> </Tr> <Tr> <Th> Elevation </Th> <Td> 14,411 ft (4,392 m) NAVD88 </Td> </Tr> <Tr> <Th> Prominence </Th> <Td> 13,210 ft (4,026 m) </Td> </Tr> <Tr> <Th> Isolation </Th> <Td> 731 mi (1,176 km) </Td> </Tr> <Tr> <Th> Listing </Th> <Td> <Ul> <Li> World most prominent peaks 21st </Li> <Li> North America prominent peaks 4th </Li> <Li> North America isolated peaks 7th </Li> <Li> US highest major peaks 17th </Li> <Li> U.S. state high point 4th </Li> <Li> Decade Volcano </Li> </Ul> </Td> </Tr> <Tr> <Th> Coordinates </Th> <Td> 46 ° 51 ′ 10" N 121 ° 45 ′ 37" W ﻿ / ﻿ 46.8528857 ° N 121.7603744 ° W ﻿ / 46.8528857; - 121.7603744 Coordinates: 46 ° 51 ′ 10" N 121 ° 45 ′ 37" W ﻿ / ﻿ 46.8528857 ° N 121.7603744 ° W ﻿ / 46.8528857; - 121.7603744 </Td> </Tr> <Tr> <Th_colspan="2"> Geography </Th> </Tr> <Tr> <Td_colspan="2"> Mount Rainier Mount Rainier National Park, Pierce County, Washington, U.S. </Td> </Tr> <Tr> <Th> Parent range </Th> <Td> Cascade Range </Td> </Tr> <Tr> <Th> Topo map </Th> <Td> USGS Mount Rainier West </Td> </Tr> <Tr> <Th_colspan="2"> Geology </Th> </Tr> <Tr> <Th> Age of rock </Th> <Td> 500,000 years </Td> </Tr> <Tr> <Th> Mountain type </Th> <Td> Stratovolcano </Td> </Tr> <Tr> <Th> Volcanic arc </Th> <Td> Cascade Volcanic Arc </Td> </Tr> <Tr> <Th> Last eruption </Th> <Td> November to December 1894 </Td> </Tr> <Tr> <Th_colspan="2"> Climbing </Th> </Tr> <Tr> <Th> First ascent </Th> <Td> 1870 by Hazard Stevens and P.B. Van Trump </Td> </Tr> <Tr> <Th> Easiest route </Th> <Td> rock / ice climb via Disappointment Cleaver </Td> </Tr> </Table> <Tr> <Th_colspan="2"> Mount Rainier </Th> </Tr>

When was the last time that mount rainier erupted