Poas Volcano caldera
The caldera of one of the active volcanos in Costa Rica. There is a visitor's center with a film. Reservations required.
Tips for travellers
Best time to see
Early in the day. As the day progresses, the caldera becomes obscured by clouds.
How many hours to explore
There is a 20 minute limit at the caldera due to sulphuric acid fumes. People with asthma or other pulmonary problems should further limit their time at the caldera.