Raufarhólshellir, located just 30 minutes from Reykjavík, is one of Iceland's longest and most famous lava tubes. This unique experience offers visitors the chance to explore the inner workings of a volcanic eruption, walking in the path of lava that flowed over 5,000 years ago. With impressive lighting highlighting the tunnel's colors and ice sculptures forming in winter, it's a must-see for nature enthusiasts and adventure seekers alike. Whether you opt for the standard tour or the more adventurous Lava Falls exploration, Raufarhólshellir promises a fascinating journey into Iceland's volcanic history.