<Table> <Tr> <Th_colspan="2"> Yellowstone Caldera </Th> </Tr> <Tr> <Td_colspan="2"> The northeastern part of Yellowstone Caldera, with the Yellowstone River flowing through Hayden Valley and the caldera rim in the distance </Td> </Tr> <Tr> <Th_colspan="2"> Highest point </Th> </Tr> <Tr> <Th> Elevation </Th> <Td> 9,203 ft (2,805 m) </Td> </Tr> <Tr> <Th> Coordinates </Th> <Td> 44 ° 24 ′ N 110 ° 42 ′ W ﻿ / ﻿ 44.400 ° N 110.700 ° W ﻿ / 44.400; - 110.700 ﻿ (Yellowstone Caldera) Coordinates: 44 ° 24 ′ N 110 ° 42 ′ W ﻿ / ﻿ 44.400 ° N 110.700 ° W ﻿ / 44.400; - 110.700 ﻿ (Yellowstone Caldera) </Td> </Tr> <Tr> <Th_colspan="2"> Geography </Th> </Tr> <Tr> <Th> Location </Th> <Td> Yellowstone National Park, Wyoming, United States </Td> </Tr> <Tr> <Th> Parent range </Th> <Td> Rocky Mountains </Td> </Tr> <Tr> <Th> Topo map </Th> <Td> USGS Yellowstone National Park </Td> </Tr> <Tr> <Th_colspan="2"> Geology </Th> </Tr> <Tr> <Th> Age of rock </Th> <Td> 2,100,000--70,000 years </Td> </Tr> <Tr> <Th> Mountain type </Th> <Td> Caldera and supervolcano </Td> </Tr> <Tr> <Th_colspan="2"> Climbing </Th> </Tr> <Tr> <Th> Easiest route </Th> <Td> Hike / auto / bus </Td> </Tr> </Table> <Tr> <Th_colspan="2"> Yellowstone Caldera </Th> </Tr>

How many calderas are part of the yellowstone hot spot trendline