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Koprinka Reservoir

Koprinka Reservoir

Копринка

NatureWritten up by us
Evgeni Dinev from Burgas, Bulgaria · CC BY 2.0 · Wikimedia Commons

Worth a detour

A large reservoir on the Tundzha just west of Kazanlak, pleasant enough for a swim and ringed with fish restaurants. Underneath it is Seuthopolis, the capital the Odrysian king Seuthes III built at the end of the fourth century BC — found during rescue digging for the dam, excavated, and then deliberately flooded. Come for an evening by the water and the knowledge of what is beneath it.

Story

Background

In 1948, with the dam already approved, archaeologists digging ahead of the flooding found something they were not expecting: a planned Hellenistic-period city with walls, a grid, a royal residence and a palace-sanctuary, built by Seuthes III as the seat of the Odrysian kingdom. It was the most complete Thracian urban site ever found in Bulgaria. Excavation continued for several years while the dam went up around it.

The decision that followed still gets argued about. The reservoir was needed and the government of the day was not going to redesign it, so the city was recorded, the moveable finds were lifted, and the rest went under. Seuthopolis now sits beneath roughly twenty metres of water. Periodically a story circulates that a drought has brought it back to the surface; it has not, and those reports have been checked and found false.

In 2005 the architect Zheko Tilev proposed building a circular dam around the site inside the reservoir, pumping it dry and opening it to visitors from a viewing ring — an idea costed at something like fifty million euro. It has attracted a lot of press and no construction. For now the reservoir is what it is: a wide sheet of water with the Balkan range behind it, good for swimming, and a place to stand and think about a capital city that was found and lost in the same decade. Kazanlak and the Thracian tombs are ten minutes away.

What this kind of place is

Lake

Most large bodies of still water in Bulgaria are reservoirs built between the 1950s and the 1970s, and the water level in them swings a long way between spring and the end of summer. The genuinely natural lakes are glacial, high in Rila and Pirin, and frozen well into May.

From open data

Dates and details

Built
1955
Municipality
Stara Zagora
Elevation
390 m
Length
74 km
Area
13 km²
Width
12 km

English Wikipedia

Koprinka is a reservoir and dam in the Rose Valley, central Bulgaria. Its construction began after 1944 and was finished in 1956. It was built on the Tundzha river at 7 km to the west of the city of Kazanlak near the village of Koprinka.

English Wikipedia · CC BY-SA 4.0

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About & sources

Last checked Sep 17, 2026

Descriptions, recommendations and the audio scripts are written for this guide.

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