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On this combo trip you will experience caving in a perfect example of an Icelandic lava tube and snorkelling in Silfra fissure at Þingvellir National Park. The tour is available directly from Reykjavík hotels and guesthouses. You start with the black as you explore the hidden world of the lava field in either the Bláfjöll 'Blue Mountains' area (winter) or Þingvellir National Park (summer). Next is snorkelling in Silfra, an otherwordly scene of heavenly shades of blue in the crystal clear water. Available all year.Operated by: Arctic Adventures
Summer: Þingvellir National ParkDeparture from Reykjavík or Þingvellir National Park Information Centre
Winter: Blue Mountains and Þingvellir National ParkDeparture from Reykjavík
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