Carnivores 2 and Carnivores: Dinosaur Hunter feature most well-known of these, Mount Ravan, a volcano in the southwest corner of the "Mount Ravan" area named after it. There is also a waterlogged, dormant volcano near the center of the "Vengar Fjords" area.
Carnivores Ice Age and Carnivores: Ice Age feature several dormant volcanoes in "Ring of Infernus".