It has been said that Thule was located in what is now Norway. Hal Foster believed that Prince Valiant was born in a castle in the Trondheim Fjord, Norway. Foster did visit the Trondheim Fjord once, only to find a sawmill instead of a impressive castle.

But our Prince was a Viking hero, and Vikings were migrating all the time. They went all the way up Greenland and New-Foundland. And indeed, there is a village in Greenland called Thule. I am not sure if there is a castle there, but I will investigate it!

About Thule in the past and nowadays:

In the 10th century Greenlandic history lumbered to its feet when the Thule culture arrived on the scene and rapidly spread eastward. . The Thule are direct ancestors of the modern-day Greenlandic Inuit. This is when, culturally and historically speaking, things really got going. The Thule were relatively sophisticated, responsible for introducing those two Greenland icons, the qajaq (kayak) and the dogsled, and it was probably these two inventions that saved them from going the same way as the hapless tribes before them Greenland did not have sustained contact with Europeans until Eric the Red, the legendary Viking, used it as a home-away-from-home during his years of exile. It was Eric the Red who called the country Greenland but the naming proved to be more lyrical than factual; most of the time Greenland was anything but. This did not deter the boatload of Icelanders who promptly set about colonising the land and for a couple of centuries the colonists herded, farmed and hunted while the country slipped back into its usual comatose state. Norway got around to annexing the country in 1261, but it was a futile attempt at control; 130 years later a big chill set in and by the time the country thawed out and the outside world made contact again, the colonists had gone, either fully acculturated into, or killed by, the Thule.

Thule Air Base

Thule is now mainly a US airforce base. It is located about 900 miles south of the North Pole, and 950 miles north of the arctic circle. Located near Dundas, a former trading station founded in 1910 by the Danish explorer Knud Rasmussen, who used it as a base for five Arctic expeditions between 1912 and 1924. The base is built on a broad and rather flat glacial valley floor between two bedrock ridges, North and South Mountains. The valley slopes gently to the east-southeast until it meets a tongue of the ice cap, the Great Land Glacier, about 10 miles inland. The initial airfield and base were build by the US Government in 1951 in just 104 days under total secrecy---code name "Blue Jay". The base was to provide a refueling point for long range bombers potentially directed to the Soviet Union. At times during the cold war Thule Air Base and adjacent facilities have been home to over 10,000 people at once. Today only about 800 men and woman live here, of which 130 are United States soldiers. Over the years, with ballistic missiles, more sophisticated bombers, aerial refueling and satellites, Thule's defense mission has changed somewhat. Currently Thule Air Base is home of 12th Space Warning Squadron, Detachment 3, 22nd Space Operations Squadron, Danish, Greenlandic and American contractors.