All of our holidays are financially protected

Black & Blue - Caving & Snorkelling Tour


We start with the "black" and explore the hidden world of the lava field under Þingvellir National Park. Gjábakkahellir cave is a perfect example of an Icelandic lava tube with its lava and rock formations.

Discovered in 1907 when a road was being made between Thingvellir and Geysir, the cave is only 50 meters from the roadside and is 360 meter in length. Situated in one of the most active volcano areas in the world this is an ideal opportunity to experience a lava landscape carved out by nature and the natural elements. Inside there are lava falls and stalactites like sharp teeth formed on the cave’s walls.

The "blue part" of our tour takes you to an enchanting underwater world, revealing in colour as we go snorkelling in Silfra for our second adventure. The Silfra fissure is one of Iceland’s best kept secrets, an other-worldly scene that is famous for its heavenly and vibrant shades of blue. With up to 100 meters visibility, it’s no surprise this is one of the 10 best dive sites in the world.

Look forward to a magical world of bold colours and shimmering lights in this clearest of waters filtered by the surrounding lava making it some of the most pristine water in the world. You can see the show of light, sun and water form rainbows on the rocks. This is due to the water being so pure that it refracts lights exactly like crystals.


This tour costs £169 per adult, unfortunately no children under 14 allowed

This tour operates daily all year at 9am for around 7 hours


This tour is professional guided tour with all equipment

Please note

This tour has a trip difficulty of 2 out of 5 possible, Minimum age is 14 years and minimum height 150 cm, during winter time the tour takes you to Leiðarendi Cave in the Bláfjöll mountain range, wear warm undergarments beneath the dry suit and bring extra clothing (fleece, wool, thermal clothing, and warm socks), hiking boots and wind proof jackets and pants/trousers can be rented and bring packed lunch if possible

Reservations:   020 3109 0600


Accredited Body Member – Absolute Iceland is an Accredited Body Member of Hays Travel Ltd, ATOL number 5534. All the flights and flight-inclusive holidays on this website are financially protected by the ATOL scheme. When you pay you will be supplied with an ATOL Certificate. Please ask for it and check to ensure that everything you booked (flights, hotels and other services) is listed on it. Please see our booking conditions for further information or for more information about financial protection and the ATOL Certificate go to: