An overgrown site on Alderney has been found to be one of the best-preserved Roman military structures in the world.
Island tradition had long suggested the site, known as the Nunnery, dated back to Roman times, although excavations since the 1930s had always proved inconclusive.
A joint project between Guernsey Museums and the Alderney Society was set up in 2008 to find the answers.
Over four August bank holiday weekends, a team of a dozen volunteers undertook various excavations to determine the history of the site.
Dr Jason Monaghan, Guernsey Museums director, said: “In 2009 we proved there was a Roman building inside the Nunnery and began to suspect this was a tower as all the northern English forts have a tower in the middle.
"In 2010 we went back specifically looking to prove there was a tower there - and ‘wow’ is there a tower. Read more.