663B - Tourist stamps VII – Caving - 50g World

Caving tours are an interesting choice for outdoor enthusiasts, offering a new outlook on Icelandic nature. Such tours require good preparation and reliable guidance. Caves are often found in remote lava fields known by only a few. Stalactites and many other fragile rock formations can be found in these caves. The Icelandic Speleological Society provides information on caves and caving tours. The cave photo on the stamp was taken in Þríhnúkahellir, a gigantic magma chamber which is considered to be one of the largest and most remarkable natural phenomena of its kind in the world.