Embark on a wild off-road adventure during this amazing half-day tour on an uber-tough "super truck" designed to tackle Iceland's rugged sub-Arctic tundra. Completely unique to Iceland, these powerful 4X4s employ the world's largest (?) road-legal tires. With a trained professional at the wheel, climb the Mountain Ulfarsfell in the outskirts of Reykjavik for a spectacular view over the city, then onwards to see stellar views of ancient volcanic terrain and Iceland's largest natural lake, Thingvallavatn, whose glasslike surface reflects the surrounding rocky tundra. Visit active volcano Hengill to view Iceland's second largest power plant, Nesjavellir, renowned for developing the nation's largest high-temperature field. Zip through lush farmland and birch and then venture off the beaten path to navigate the Thousand Waters Trail, a luxuriant path crossing dense mud banks, crackling streams and flowing rivers. Relish the chance to experience Iceland's unique natural beauty at such close range before returning to port.