<Tr> <Td_colspan="2"> IUCN category II (national park) </Td> </Tr> <Tr> <Td_colspan="2"> Great Sand Dunes </Td> </Tr> <Tr> <Th> Location </Th> <Td> Saguache County and Alamosa County, Colorado, United States </Td> </Tr> <Tr> <Th> Nearest city </Th> <Td> Alamosa </Td> </Tr>

Where are the great sand dunes of colorado located