The Angry Mountain is a 1950 thriller novel by the British writer Hammond Innes.Vinson & Kirkpatrick p.455 An Englishman still tortured by his wartime experiences, gets drawn into intrigue in Czechoslovakia and Italy.
Innes was in San Sebastiano when Vesuvius erupted and lava rolled over the village.Obituary: Hammond Innes - Arts & Entertainment - The Independent
References
Bibliography James Vinson & D. L. Kirkpatrick. Contemporary Novelists. St. James Press, 1986.