Padirac cave, France The Padirac Chasm or Gouffre de Padirac is a cave located near Gramat, in the Lot département, in France. The chasm itself is approximately 99 m ft) around its rim with a diameter of approximately 35 metres ft).
Secluded cave near Lagoa Algarve Portugal [Portugal is has it all. great food and wine sights natural spots (like this one) friendly people. and you can get away with your high school Spanish if you need to.
Ice cave in the Skaftafell National Park in Iceland. Ice caves collapse and new ones form as each glacier grinds slowly towards the sea. Local guides can help you (without dying) find one. (Visit Skaftafell National Park in Iceland.