The highest active volcano in the world is Ojos del Salado, located on the Argentina-Chile border. Standing at approximately 6,893 meters (22,615 feet) above sea level, it is also the second highest mountain in the Western Hemisphere. Ojos del Salado is a stratovolcano, characterized by its tall, conical shape formed from layered volcanic materials. It last erupted around the year 1300, making it considered active but currently dormant. The mountain is a popular destination for climbers and adventurers, who are drawn to its challenging routes and stunning high-altitude landscape in the Andes mountains.