Kachaghakaberd, Fortress in Khojaly District, Azerbaijan

Kachaghakaberd is a mountain fortress in the Tartar District of Azerbaijan, built on a limestone cliff at roughly 1706 meters elevation. The structure sits on rock walls that rise steeply above the terrain, and two stone cisterns cut into the ground inside the fort collect rainwater and snowmelt for water supply.

Kachaghakaberd was a key stronghold of the medieval Armenian Principality of Khachen in the High Middle Ages. Its position atop limestone cliffs 50–60 m high, with a single hard-to-reach entrance on the south side, meant it was never stormed. Parts of the defensive walls still stand.

The name comes from Armenian and means something like Magpie's Fortress, a reference to how high the structure sits above the surrounding land. Standing at the base of the cliffs and looking up, visitors can see why only a bird seemed able to reach such a place.

The fort can only be reached through a single difficult approach on the southern side, which involves steep and uneven ground. Good footwear and a reasonable level of fitness are needed, as the terrain and elevation make the climb demanding.

Despite sitting on a rock with near-vertical walls, the interior holds two cisterns cut directly into the stone, which kept the garrison supplied with water during long stays. This detail shows the fort was designed not just as a quick refuge but as a place where people could hold out for extended periods.