Stalin-era tunnel project began in 1950

A secret decree from 1950 ordered the construction of a tunnel under the Tatar Strait, connecting Sakhalin Island to the Russian mainland. The goal was to create a permanent transportation link, independent of seasonal ice conditions, and to support the railway line between Komsomolsk-on-the-Amur and Pobedino.

Tunnel plans involved significant infrastructure

The tunnel was planned to be about 10 km long, connecting Cape Pogibi on Sakhalin to Cape Lazarev on the mainland. The project also included 327 km of railway track and required three construction sites, with the tunnel itself designated as site 6. The schedule was strict, aiming for a ferry service by 1953 and the tunnel by 1955.

Forced labor was central to the project

The construction relied heavily on forced labor from the Goulag system. By 1953, more than 27,000 workers were involved, including prisoners released specifically for the project. On the mainland, 120 km of railway track was laid, and a dam was built near the future terminal. A deep vertical shaft, reinforced with cast iron, was one of the most notable achievements.

Construction was halted in 1953

Despite significant progress, the actual tunnel drilling under the strait had barely begun when the project was halted. A draft decree from March 21, 1953, from the Council of Ministers canceled the tunnel and several other major projects, citing a lack of necessity rather than technical challenges. This decision followed concerns about costs and the risk of prisoner uprisings, according to some sources.

Modern discussions revisit the idea

Since the 2010s, there have been renewed discussions about connecting Sakhalin to the mainland, but generally in the form of a bridge rather than a tunnel. However, budgetary, diplomatic, and technical challenges make the project highly unlikely. Historians have studied the original documents, revealing details about the project's planning and cancellation.