NEW HARBOR — An archaeological dig of what’s believed to be a 17th-century structure previously undiscovered at Maine’s Pemaquid historic site will get under way this week.

The weeklong excavation at Colonial Pemaquid State Historic Site at New Harbor will be open for viewing to the public.

Maine Bureau of Parks and Lands historian Tom Desjardin says a test dig already has revealed more than 300 artifacts at the structure site, such as pieces of pottery and china and nails.

The dig is sponsored by the Friends of Colonial Pemaquid and led by the Maine Historic Preservation Commission.

Colonial Pemaquid was home of American Indians at least 7,000 years ago and was also the site of a 17th-century English fishing station and village.