Across Europe and Korea, rows of concrete anti-tank obstacles still remain in fields, mountains, riverbanks, and borderlands. They were built to slow or stop invading armies, often as part of much larger defensive systems.

Most were never used in the battles they were designed for. Decades later, they have become part of the landscape, weathered by time and absorbed into places that have long since returned to civilian life.

Dragon’s Teeth looks at these structures as remnants of another kind of frontier—physical traces of fear, division, and the wars that were expected to come.