Antisana volcano is an active stratovolcano located in the Andes mountain range of Ecuador. It stands at approximately 5,758 meters (18,874 feet) above sea level and is the fourth highest volcano in the country. The volcano is known for its symmetrical cone shape and is often capped with snow and glaciers. The last significant eruption of Antisana occurred in the late 18th century, around 1773. The surrounding area is rich in biodiversity and is part of the Antisana Ecological Reserve, which protects various ecosystems and wildlife. The volcano is a popular destination for climbers and nature enthusiasts.