fumarole
/ˈfjuːməˌroʊl/
noun
- A hole or vent in a volcanic area from which hot gases and steam escape.
- Scientists collected gas samples from the fumarole to study volcanic activity.
- Hikers could see steam rising from a fumarole near the volcano's edge.
- The fumarole released sulfurous gases that smelled like rotten eggs.
Synonyms