including hiking through the volcanic landscapes near Mount Hekla, driving to the highlands, and taking a day trip to some of Iceland's famed waterfalls like Háifoss, Seljalandsfoss, and Skógafoss.

Mount Hekla in Iceland, known as 'the chimney of hell' by medieval Christians, has been considered a gateway to the underworld since ancient times. A Gate of Hell? The entrance to the Actun ...