Complex sentence: There were peripheral settlements around Roman Deva, including Broughton where the fortress got its water supply and Handbridge which was the site of a sandstone quarry and the Minerva Shrine; the shrine is the only in situ, rock cut Roman shrine in Britain.
Split into simpler sentences: There were peripheral settlements around Roman Deva, including Broughton, where the fortress sourced its water supply, and Handbridge, the site of a sandstone quarry and the Minerva Shrine. The shrine is the only in situ, rock-cut Roman shrine in Britain.