<Table> <Tr> <Th_colspan="2"> Mount Hood </Th> </Tr> <Tr> <Td_colspan="2"> Wy'east </Td> </Tr> <Tr> <Td_colspan="2"> Mount Hood reflected in Mirror Lake . </Td> </Tr> <Tr> <Th_colspan="2"> Highest point </Th> </Tr> <Tr> <Th> Elevation </Th> <Td> 11,249 ft (3,429 m) NAVD 88 </Td> </Tr> <Tr> <Th> Prominence </Th> <Td> 7,706 ft (2,349 m) </Td> </Tr> <Tr> <Th> Listing </Th> <Td> <Ul> <Li> North America prominent peak 49th </Li> <Li> US most prominent peaks 28th </Li> <Li> US state high point 13th </Li> <Li> Oregon county high points </Li> </Ul> </Td> </Tr> <Tr> <Th> Coordinates </Th> <Td> 45 ° 22 ′ 25" N 121 ° 41 ′ 45" W ﻿ / ﻿ 45.373514489 ° N 121.695918558 ° W ﻿ / 45.373514489; - 121.695918558 Coordinates: 45 ° 22 ′ 25" N 121 ° 41 ′ 45" W ﻿ / ﻿ 45.373514489 ° N 121.695918558 ° W ﻿ / 45.373514489; - 121.695918558 </Td> </Tr> <Tr> <Th_colspan="2"> Geography </Th> </Tr> <Tr> <Td_colspan="2"> Location relative to other Oregon volcanoes </Td> </Tr> <Tr> <Th> Location </Th> <Td> Clackamas / Hood River counties, Oregon, U.S. </Td> </Tr> <Tr> <Th> Parent range </Th> <Td> Cascade Range </Td> </Tr> <Tr> <Th> Topo map </Th> <Td> USGS Mount Hood South </Td> </Tr> <Tr> <Th_colspan="2"> Geology </Th> </Tr> <Tr> <Th> Age of rock </Th> <Td> More than 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> 1866 </Td> </Tr> <Tr> <Th_colspan="2"> Climbing </Th> </Tr> <Tr> <Th> First ascent </Th> <Td> July 11, 1857 by Henry Pittock, W. Lymen Chittenden, Wilbur Cornell, and the Rev. T.A. Wood </Td> </Tr> <Tr> <Th> Easiest route </Th> <Td> Rock and glacier climb </Td> </Tr> </Table> <Tr> <Th_colspan="2"> Mount Hood </Th> </Tr>

When was the last time mt. hood erupted