Roman kiln unearthed by builders at Norton Primary School
The remains of a Roman kiln have been discovered by builders working at a school in North Yorkshire.
The discovery was made during construction of a £1.5m extension at Norton Primary School near Malton.
North Yorkshire County Council said the kiln was the first major find in the area since the 1940s.
The kiln was found along with fragments of pottery. Archaeologists also uncovered ditches believed to be of a Romano-British date.
A Roman fort existed on the north side of the River Derwent at Malton and previous work at the school had uncovered Roman, medieval and post-medieval pottery.
An investigation of the site by an archaeological team was a condition of planning approval for work at the school.
The county council, which is responsible for the site, said the kiln was being excavated in such a way that it could be reconstructed elsewhere.
It would not be possible to preserve it on site.
Chris Metcalfe, North Yorkshire's executive member for the Historic Environment Team said: "This is a very exciting and significant find for the local community and for the school.
"As the excavation did not delay the building work this is still scheduled to complete on time.
"This is an excellent example of effective team work between building contractors and archaeologists."
A report on the kiln will be submitted to the county's Historic Environment Record on completion of all the work at the site.