Sites of Uncertain Date
Various sites of importance are as yet undated and difficult to place in the timeline. Others contain items from many different periods whose story has not yet been unraveled or items where the time period and location cannot be easily reconciled. The Hirta and Burghead items may date from the Dark Ages some four centuries or more after the appearance of the Romans and the commencement of the historic era.
| Location | Details | Type |
| North Sea | A flint scraper, found in a marine core taken from the sea bed between Norway and Shetland. The area would have been above sea level between 16,000 and 8000 BC, but the tool might also have been lost overboard at a later date. | (M, O, S) |
| Assynt | Discoveries in the Inchnadamph caves suggest human predation on Lynx, Brown Bear, Arctic Fox and Reindeer. There is some evidence that the site may go as far back as the late Paleolithic era, although carbon dating analysis provides an estimate of 6000 BC. | (M, O, S) |
| Moray | Diverse ancient artefacts from various periods were so commonly found in the Culbin Sands between Forres and Nairn that in the late 19th century "searching for arrows" was a well-known local pastime. 29,500 items are held by the National Museum of Scotland but many thousands more have been lost. | (M, O, S) |
| Fetlar | Funzie Girt dyke is a wall, probably originally a boundary marker of some kind, that runs north—south across the island. Date unknown, but probably Neolithic. The division of the island by the dyke was so marked that the Norse seemed to treat Fetlar as two distinct islands. | (S) |
| Aberdeenshire | Petrospheres called "Carved Stone Balls" of uncertain date, also found on Orkney, Skye, Iona and Lewis. The Aberdeenshire finds coincide with unusual "recumbent" stone circles, suggesting a Neolithic provenance. | (S) |
| Hirta | "Horned structures" in Gleann Mòr including the "Amazon's House". Nothing like them exists anywhere else in Britain or Europe, and their original use is unknown. It is possible they are Pictish and date from 400 to 900 AD, although they may be older. | (S) |
| Moray | The chambered well at Burghead was discovered in 1809. This underground structure is unique in a Scottish context and is probably of Dark Age origin, although it may be older. | (S) |
Read more about this topic: Timeline Of Prehistoric Scotland
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