10 most difficult Iceland riddles

Following the German invasion of Denmark and Norway, the British government became increasingly concerned that Germany would soon try to establish a military presence in Iceland. After failing to persuade the Icelandic government to join the Allies, the UK invaded on the morning of 10 May 1940.

Öræfajökull is the largest active volcano in the country, and on the summit crater's north-western rim is Hvannadalshnúkur, the highest peak in Iceland at 2,110 metres (6,920 ft). Geographically, Öræfajökull is considered part of Vatnajökull, and the area covered by glacier is within the boundary of Vatnajökull National Park.

The Alþingi is the national parliament of Iceland. It is the oldest surviving parliament in the world[, a claim shared by Tynwald. The Althing was founded in 930 at Þingvellir. Even after Iceland's union with Norway in 1262, the Althing still held its sessions until 1800, when it was discontinued for 45 years. It was restored in 1844 and moved to Reykjavík, where it has resided ever since.

The Golden Circle consists of three of the most popular tourist sites in Iceland; National Park, Geysir hot spring area and Gullfoss waterfall. Golden Circle takes you from Reykjavik one way, and after visiting the sites, another way back to the city, making it into a 300 km circle. The Diamond Circle is a route around Húsavík and Lake Mývatn in North Iceland.

The Denmark Strait or Greenland Strait is an oceanic strait between Iceland (to its northwest) and Greenland (to its southeast). The Norwegian island of Jan Mayen lies northeast of the strait.

Vigdís Finnbogadóttir served as the fourth President of Iceland from 1980 to 1996. With a presidency of exactly sixteen years, she remains the longest-serving elected female head of state of any country to date. Currently, she is a UNESCO Goodwill Ambassador.

Hvítserkur is a 15 m high basalt stack along the eastern shore of the Vatnsnes peninsula, in northwest Iceland. It has two holes at the base, curved out by the sea erosion, which gave it the appearance of a dragon who is drinking. The legend has it, Hvítserkur is a petrified troll who got caught by daylight and turned into stone.

There are approximately 200 volcanoes in Iceland. Most of them are concentrated along the border of tectonic plates stretching from the south-west of the island to the northeast. It is estimated that from the year 1500 from Icelandic volcanoes, the amount of lava equal to about one third of the amount of lava from all other eruptions in this period around the world.

Leif Erikson was a Norse explorer from Iceland. According to the Sagas of Icelanders, he established a Norse settlement at Vinland, tentatively identified with the Norse L'Anse aux Meadows on the northern tip of Newfoundland in modern-day Canada. Later archaeological evidence suggests that Vinland may have been the areas around the Gulf of St. Lawrence, and that the L'Anse aux Meadows site was a ship repair station.

The Cod Wars were disputes running from the 1950s to the 1970s over fishing rights in the North Atlantic. Each of the disputes ended with Iceland's victory. As a result, the already declining British fisheries were hit hard by being excluded from their prime fishing grounds with thousands of fishermen and people being put out of work.