Which cities are built on extinct volcanoes?

Portland, Oregon is nestled among extinct volcanoes (and not very long extinct either, geologically speaking) of the Boring Lava Field. read more

Portland, Oregon is nestled among extinct volcanoes (and not very long extinct either, geologically speaking) of the Boring Lava Field. It has two extinct volcanoes – Mount Tabor and Rocky Butte – within the city limits, and a volcanic ridge to the west – Elk Hill, Swede Hill, TV Hill – forms the city's border with Beaverton. read more

An extinct volcano is no longer near an active geologic hot spot, if it ever was. Although commonly described as such, Edinburgh Castle in Scotland is not located atop an extinct volcano, it is actually located on a dolerite plug. read more

A2a Hi Mathew. There are several in the United States , Jackson Mississippi , Bend in Oregon and Portland in Oregon . Also little known is Edinburgh in Scotland . It's castle sits upon castle rock which is a plug in the crater of an extinct volcano . It's made from a type of basalt called dolerite. read more

List of extinct volcanoes includes volcanoes which scientists consider unlikely to erupt again. A volcano which has not erupted in the past 10,000 years is extinct. The extinct volcano no longer has a high silica or low silica lava supply. An extinct volcano is no longer near an active geologic hot spot, if it ever was. read more

Nine Decade Volcanoes feature in our list: Mount Etna, Mount Nyiragongo, Mount Vesuvius, Mount Rainier, Sakurajima, Galeras, Mauna Loa, Mount Unzen and Mount Merapi. These and other volcanoes on our planet could erupt at any moment, wiping nearby settlements – and their inhabitants – from the face of the Earth. read more