This adventurous tour is your chance to go cave exploring and snorkeling in one incredible day on this day trip from reykjavik visit icelands gjbakkahellir cave and the silfra fissure both located in the unesco world heritage listed ingvellir national park marvel at unique sights and discover the depths of some of icelands most stunning natural wonders as you explore a mysterious cave and snorkel in a pristine dream like underground pool your friendly knowledgeable guide will make sur