<Tr> <Td> Taupo Nui a tia </Td> <Td> Taupo Volcanic Zone </Td> <Td> North Island, New Zealand </Td> <Td> Whakamaru Ignimbrite / Mount Curl Tephra </Td> <Td> 340,000 </Td> <Td> 2,000 km </Td> <Td> </Td> </Tr> <Tr> <Td> Heise Volcanic Field </Td> <Td> Yellowstone hotspot </Td> <Td> Idaho, United States </Td> <Td> Kilgore Tuff </Td> <Td> 4,500,000 </Td> <Td> 1,800 km </Td> <Td> </Td> </Tr> <Tr> <Td> Heise Volcanic Field </Td> <Td> Yellowstone hotspot </Td> <Td> Idaho, United States </Td> <Td> Blacktail Tuff </Td> <Td> 6,000,000 </Td> <Td> 1,500 km </Td> <Td> </Td> </Tr> <Tr> <Td> Cerro Guacha </Td> <Td> Altiplano - Puna volcanic complex </Td> <Td> Sur Lípez, Bolivia </Td> <Td> Guacha ignimbrite, two smaller eruptions identified </Td> <Td> 5,700,000 </Td> <Td> 1,300 km </Td> <Td> </Td> </Tr>

When was the last time a supervolcano erupted