Arenal is Costa Rica’s best-known volcano. It’s a stratovolcano – a large, symmetrical volcano that’s built upon layers of ash, rock and lava – and at 5,437 feet (1,657 meters), it stands high above the rest of the countryside. Positioned within Costa Rica’s fertile northern lowlands, the Arenal Volcano is an unavoidable presence while traveling within this part of the country. It is tall and imposing and has a reputation that precedes itself. Arenal’s perfectly symmetrical shape makes it a sightseer’s dream, while its abundance of outdoor activities makes it an easy place to check things off your “must-do in Costa Rica” list.