Name a volcano in Scotland?

There are no active or dormant volcanoes in Scotland.
However, there are many remnants of extinct volcanoes and volcanic activity from ancient times.
For example, Edinburgh Castle stands on the plug of an ancient extinct volcano.
Goat Fell on Arran is an extinct volcano.
dumbarton rock is another
at one point millions of years ago the whole of Scotland was full of volcanos so there is remains of extinct ones all oer the country