Related Clues:
- Clothes dryer outlet
- Opening contest shunned by beginner
- Duct register
- Release, as smoke
- What a volcano may do
- Be an active volcano
- Place for hot air to escape
- Put nitrogen in to check gas exhaust
- Express train finally entering test
- What active volcanos do
- Air conduit
- Travel Peru by car - is that to be really active?
- Go from dormant to active
- Emulate Hawaii's Kilauea
- Time perfect to return and blow top