A MYSTERIOUS military base has left a group of experts bamboozled – and they need your help in identifying its use.
Volunteers and workers from the National Trust and Surrey County Archaeological Unit spent two days clearing the overgrown site and structure on Reigate Hill, which lies nearly 200 metres from Reigate Fort.
It was originally believed to be an observation post, but the project team are not convinced.
"Reigate Hill and this unidentified structure are still very much a mystery to us," said Paul Bowen, a military historian and member of the Front Line Surrey Hills team.
"There's 100 years of Surrey's military history here with Reigate Fort, various unidentified structures and the site of a tragic Second World War plane crash.
"Despite this, we still know very little about the area's military history.
"We would be so pleased to hear from readers who remember Reigate Hill during the Second World War; what structures do they recall on the hill? Who was based there? What were the buildings used for?"
The base has two entrances, four windows on the south-facing side and several ventilation holes, and measures roughly 8m long and 3m wide.
According to members of the team it doesn't appear to occupy a defensive position.
If you think you can help identify the origins of the mysterious base, call Paul Bowen directly on 07968 832 367 or e-mail paul.bowen@surreycc.gov.uk