The Catoctin Iron Furnace is a historic iron furnace located in Maryland, built in the early 19th century. It played a significant role in the production of iron during the industrial era, utilizing local resources such as limestone and charcoal from nearby forests. The furnace operated until the mid-1800s, contributing to the region's economy and development. Today, the site is preserved as part of the Catoctin Mountain Park, allowing visitors to explore its historical significance. The remnants of the furnace and surrounding structures provide insight into the iron-making process and the industrial history of the area.