I am trying to find out also. I know there is one outside of Denton on I35w. A friend said she has found it on the net. Will check back when I find it.
Pilot Knob is an extinct volcano located seven miles south of central Austin, Texas.
Arthurs seat is one
Diamond Head may be the most popular.
dormant.
it is called a extinct volcano
its called extinct
Rangitoto
bennachie
The dormant volcano in Hawaii is called the Mauna Kea Volcano.
Diamond Head
It can be either dormant or extinct
The Biblical name is Mount Ararat... ;)