The archaeological dig on the tidal island of Chapelle dom Hue, to the north-west of the Catioroc, near Perelle, is almost finished after three weeks of work.
The team have uncovered a substantial one-room building, which stands on an east-west axis.
States archaeologist Phil de Jersey said he was really pleased with how it had gone.
‘It is much bigger than we expected and that is part of why the work has taken longer than we planned,’ he said.
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