Justin Wang at Turrialba Volcano in Costa Rica as part of research to search for analogs for the Martian environment on Earth.

Arenal Volcano, Costa Rica's best-known stratovolcano ... You can hike the national park's trails on your own with just a trail map, but several recent visitors recommended hiring a guide to ...

Eruptions at Poás Volcano in Costa Rica have intensified since early Monday, with the Volcanological and Seismological Observatory of Costa Rica (OVSICORI) reporting multiple significant events. At 12 ...

Standing 11,260 feet tall, Irazu is the highest active volcano in Costa Rica (its last eruption was in 1994) and one of the most popular for Costa Rica visitors. From its peak on a clear day ...