The remains of a Mesolithic home have been unearthed during works for the new Forth Crossing.

Archaeologists discovered a large oval pit of about seven metres in length, about half a metre deep and with a number of postholes. Hearths, flints and arrowheads were also found.

It is thought the remains are about 10,000 years old and are the site of one of Scotland’s earliest homes.

The discovery follows archaeological excavation carried out in preparation for the Forth Replacement Crossing.

Rod McCullagh, a senior archaeologist at Historic Scotland, said: "This discovery and, especially the information from the laboratory analyses adds valuable information to our understanding of a small but growing list of buildings erected by Scotland's first settlers after the last glaciation, 10,000 years ago.

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"The radiocarbon dates that have been taken from this site show it to be the oldest of its type found in Scotland which adds to its significance."

The site at Echline in South Queensferry is unassuming to the untrained eye, but to archaeologists working on the dig, it details a home which would have been built as settlers moved north after the last Ice Age.

The wooden postholes found probably show where the walls and roof were supported.

Ed Bailey, project manager for Headland Archaeology, the company that carried out the excavation works, said: "The discovery of this previously unknown and rare type of site has provided us with a unique opportunity to further develop our understanding of how early prehistoric people lived along the Forth.

"Specialist analysis of archaeological and palaeoenvironmental evidence recovered in the field is ongoing. This will allow us to put the pieces together and build a detailed picture of Mesolithic lifestyle."

Transport Minister Keith Brown said: "This ancient dwelling, which was unearthed as part of the routine investigations undertaken prior to construction works, is an important and exciting discovery.

"We now have vital records of the findings which we will be able to share to help inform our understanding of a period in Scotland's ancient history."

(IT)