Poas Volcano

"Poás offers the wonderful opportunity to watch the bubbling, steaming cauldron belch sulfurous mud and water hundreds of meters into the air."

"This is widely regarded as Costa Rica's coolest volcano experience. An observation platform lets you peer right inside what is thought to be the largest active volcanic crater in the world." Full review

"If hiking to a crater is on your list, then Poás Volcano is your spot. It's not a strenuous hike, and at just one hour from San José is easily accessible. Pending good weather, Poás is..."