At the Lava Show in central Reykjavik, real lava is reheated to around eleven hundred degrees and poured, glowing orange, into a room just metres from your seat. It is the only show of its kind anywhere, and the wave of heat that rolls over the audience makes the countrys volcanic character suddenly, thrillingly real. A knowledgeable host explains Icelandic eruptions with warmth and humour as the molten rock cools and crackles. Sit near the front for the full blast of heat, and book ahead, as the sessions are small and sell out quickly.