Stong, Commonwealth Settlement and Gjáin gorge
Some early settlers of Iceland chose the fertile valley of Thjorsádal as the site for their farmsteads. They were unaware of the fact that the tranquil-looking, snow-capped mountain towering on the south was an active volcano. In 1104, there was a massive eruption in Mt. Hekla, and In 1939 Scandinavian archaeologists excavated Stöng and revealed what was left of the smothered Saga-age farm. The findings provided fresh data about the design and construction of Viking long-houses and their evolution up to the 12th century and other valuable information about the period known as the Commonwealth.the settlement in Thjorsádal was buried under tons of volcanic debris and ash.
In 1974, on the 1100th anniversary of the settlement of Iceland, architect Hordur Agustsson and a team of historians pieced together the available data and meticulously constructed a replica of Stöng at Skeljastadir, a few kilometers down the valley.
The reconstructed farm is called Thjodveldisbaer (Commonwealth Farm), and is perhaps the best representation of Icelandic medieval dwelling. What is actually left of the original farm at Stöng are some stone foundations, now covered by a large protective wooden shelter.
Stöng is also known for being the home of the prominent farmer and warrior Gaukur Trandilsson, who according to a brief account in Njáls Saga, was killed by Asgrimur Ellida-Grimsson, his foster-brother, in a duel of honor apparently over Gaukur's affair with a kinswoman of Grimsson. In the 19th century some old bones were discovered in a steep cliff on the north bank of Thjorsá River, further down the valley, supposed to be those of Gaukur from Stöng. The place is called Gaukshofdi (Gaukur's bluff).