Right, Alexander |Armstrong in iceland's frozen wastes, with world champion female Viking wrestler, Eva Dogg Johannsdottir and, left, with archaeologist Kevin Martin preparing to snorkel in the freezing water of Thingvellir
I base myself at the boutique ION Luxury Adventure Hotel, next to Thingvellir
National Park and overlooking the vast lake where divers can swim between a fissure in the North American and Eurasian tectonic plates, in clear, lava-filtered glacial water.
you can walk through a huge volcanic rock outcrop that has split because of its location on the Mid Atlantic Ridge between the American and Eurasian plates that are slowly separating.
They include the island nation's holy place, Thingvellir
, where the oldest parliament was established in 930AD.
Althingi is recognized as the world's oldest parliament, and though it now convenes in downtown Reykjavik, the UNESCO World Heritage site and National Park at Thingvellir
continues to welcome more than half a million visitors each year.
A wooden bridge in Iceland's Thingvellir
national park is testimony to the growing problem.
Among the exciting cruises during the Summer 2014 program are: Natural Wonders and Wildlife (May 17, 2014, 14 days): Experience the geological magnificence of Iceland, including UNESCO-listed Thingvellir
National Park and the prehistoric site of Skara Brae.
Over Reykjavik, where he reflects on what is visible to him at altitude and contrasts it with what he knows is below but can't see, Lindberg's character observes "towering geysers, seething lava fields" and "the vast plain Thingvellir
where the old parliament was born between volcanic folds.
During a whale-watching trip, they test out the latest binoculars, while back on dry land, the duo turn their attention to geothermal technology, and at the beautiful Thingvellir
National Park to get to grips with two unmanned aerial vehicles with built-in cameras as they attempt to capture some breathtaking scenery.
yen]Icelandic Mountain Guides: Golden Circle & Magical Nights This light hiking tour brings together the famous Golden Circle of natural wonders: Thingvellir
National Park, Geysir and Strokkur geysers, and Gullfoss waterfall.
Travellers also have the opportunity to experience the exquisite Icelandic nature and must visit the Blue Lagoon, Thingvellir
National Park, Gullfoss, Geysir, Vatnajokull and surroundings, Asbyrgi and Dettifoss on their way around the island.
By car, the Golden Circle tour makes a fascinating day-long excursion from Reykjavik, taking in Thingvellir
, setting for the Viking Parliament, the hot blowhole of Geysir (now dormant) and mighty Gullfoss waterfall.