We opted for the 2 hours but was left wanting more. Great fun Nico our guide was excellent. Would go back highly recommendedCaterham - TripAdvisor We had a fantastic afternoon tour with guide Anke. Just do as this is a perfect experience for young and oldAWinch - TripAdvisor The guide was informative and helpful. Unlike other tours they did not have radios for an ongoing commentary.Marty911 - TripAdvisor Karina Nico Carmen Mireia Júlia Viggo Joan Eva Ibai
