PROSPECT — The 150-year-old Fort Knox oven designed to feed troops at the Maine coastal garrison will be used to cook up Fourth of July treats.

A Civil War re-enactor and living-history interpreter known as Miss Rose will be firing up the oven, which until this spring had sat unused for 112 years. She’ll discuss the food preparation techniques of the past while using the massive, wood-fired oven.

Constructed between 1844 and 1864, Fort Knox is Maine’s largest historic fort and a stunning example of master granite craftsmanship.

The fort on the Penobscot River never saw combat. But soldiers were stationed there during the Civil and Spanish American Wars.