Sunken Church of St. Stephen

The Sunken Church of St. Stephen on the edge of the Tsalka Reservoir is one of the most unusual historical sights in the Kvemo Kartli region. This 11th-century medieval hall church spends a large portion of the year partially or completely submerged under water. Unlike traditional Georgian churches built on high hills to overlook the landscape, this building sits in a low valley that was permanently altered by 20th-century development, creating a striking seasonal landmark.

The Soviet Hydroelectric Legacy

The unusual setting of this building is the result of industrial expansion in the mid-20th century. During the construction of the Khramhesi hydroelectric power plant, engineers built a major dam that flooded the valley floor to create the Tsalka Reservoir. This process placed several historic settlements, ancient cemeteries, and sacred sites underwater. Because of its exact elevation, the church of St. Stephen ended up directly on the reservoir's waterline, converting an ancient village house of worship into a lonely monument to a flooded past.

Seasonal Water Cycles and Architecture

The appearance of the site changes drastically depending on regional water management and weather cycles:

• Late Summer and Autumn: High water levels submerge the structure, making the stone building appear to rise directly out of the lake surface. During these months, the interior is inaccessible without wading or using a small boat.
• Winter and Early Spring: The reservoir levels drop substantially to prepare for seasonal melt, exposing the dry lakebed. This allows visitors to walk directly up to the ruins on foot.

The building itself is constructed from heavy blocks of dark basalt stone, typical of the volcanic architecture found across the Tsalka plateau. Visitors who explore the site during the dry months can observe the surviving masonry work of the roofless nave and the foundations of an ancient stone wall that once enclosed the churchyard.