Source one: Burial cairn at Maeshowe, fifteen miles from Skara Brae
Skara Brae religion is still unknown to this day. They had no religious records because they had not developed a written language. They also have burial mounds, or cairns, so there may have been some belief in an after life. The dead were thought to be a very important part of Skara Brae due to the fact that they put so much time and effort into making the cairns. It is said that it took up to over six months to construct the largest and most used tomb. Because of this, there is a strong chance that they could have worshipped their ancestors.
The Neolithic cairns found around Skara Brae were an important part of village life and were visited regularly. Archaeologists that excavated the tombs, found that there was more than one occupant each cairn and sometimes held piles of jumbled bones from more than one body.
The design of their tombs were quite similar to the layout of the houses so maybe they thought that their spirits of the dead were still living amongst them.
The people of Skara Brae did not leave any religious writings because they didn’t have a written language apart from basic symbols known as runes. Their religion will always be unknown to us. We can only guess that their dead was an important part of their religion.