I loved watching the movie, Into the Inferno, by Werner Herzog. Netflix carries it. Very very fascinating!
Also, his 1977 short La Soufrière[1] is set on an island where a volcano is about to erupt.
[0] https://www.imdb.com/title/tt9203832/
[1] https://www.imdb.com/title/tt0076741/
Link to Into the Inferno: https://www.imdb.com/title/tt4846318/