- Embark on a great Icelandic adventure in this Iceland South Coast and Ice Cave tour from Reykjavik - Experience the world's rarest natural phenomenon: a blue ice cave under Vatnajökull, Europe's largest glacier - See some of Iceland's pride: black sand beaches, the only glacier lagoon, and the Northern Lights - Learn about the breathtaking and rare natural phenomena of glaciers spawning in Skaftafell on a glacier hike