An ancient monument uncovered by a team of amateur archaeologists is exciting and puzzling the experts.

Three years of excavations on the side of a hill in Aspull, Wigan have revealed a Bronze Age burial site surrounded by a ring shaped ditch that is believed to be a religious henge.

The find is thought to be unique to the region and potentially of national importance.

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The archaeologists working at the site believe it marks two different points in history.

"From the Neolithic Stone Age period it would have been a ritual holy site," Mr Aldridge said.

"But then at a later date, when the Bronze Age people came along, they thought it was something special and decided to create their own funerary monument in the middle of it.

"You do get Bronze Age barrows in the north, but they’re quite rare. You usually find them down south in places like Wiltshire.

"And you have to go to the Lake District, Yorkshire, Derbyshire or North Wales before you get henge monuments or Neolithic Stone Age activity.