Promontory forts are ancient defensive structures built on elevated land, often overlooking coastlines or rivers. These forts were strategically located to provide a vantage point for spotting potential invaders and to control access to important trade routes. They typically feature earthworks, stone walls, and sometimes wooden structures. Many promontory forts date back to the Iron Age and can be found in various regions, particularly in Britain and Ireland. They served as both military strongholds and community centers, where people could gather for protection and trade. Today, these sites are important archaeological locations that offer insights into ancient societies.