Short answers, pulled from the story.
The steep slope of Brattahlíð rises from the head of Tunulliarfik Fjord in south-western Greenland. This location offered shelter from ocean storms while remaining close to the sea for travel and trade.
Erik the Red established his estate here toward the end of the 10th century. Erik and his descendants lived at this site until about the mid-15th century.
A human skull surfaced during community construction work on a school in 1961. That single discovery triggered an archaeological excavation that revealed three separate Norse church buildings including Thjodhild's church.
Cooling temperatures from the Little Ice Age likely played a significant role in the decline along with soil erosion degrading agricultural capacity. Norway abandoned the colony after the Black Plague struck Europe and political turmoils across the Atlantic made support difficult to maintain.
The estate along with other archaeological sites in southwestern Greenland received inscription on the UNESCO World Heritage List in 2017. This designation falls under the title Kujataa Greenland: Norse and Inuit Farming at the Edge of the Ice Cap.