The site «Sestroretsky rubeg» dedicated to one of the most interesting objects Patriotic fortification - Karelian fortified region (KaUR). Fortified region, construction, which began in 1928, is actually a test, which tested various elements of the Soviet fortifications, until the mid 50-ies of the twentieth century. As a military unit KaUR existed until 1995, then was disbanded.

Much of the site devoted to one of the object KaUR - artillery DOT «APK-1» based in Sestroretsk. During the past year in DOT way reconstruction work, improve grounds. The key role played by youth Sestroretsk and St. Petersburg. It is a unique opportunity to clearly convey to young people all the things that have come through our grandfathers during the Second World War II. Much of this contributes to a military museum of archeology, which can provide documentary evidence of the time.

Karelian, Kiev, Mozyr and Polotsk - the first fortified regions, built in the Soviet Union. Construction of the Karelian fortified region (KaUR) was launched in 1928 and ended in virtually mid-1950's. KaUR was in fact ground, which tested the technology built firing points, was conducted test equipment and weapons. Most of the objects fortified region of the first construction, but the most unique, you can take the post-war construction, although their numbers on low (artillery DOT the cannon fire ZiF-25 (100 mm), the construction of the tower tank IS-4 (122 mm), kazemat mortars and machine guns). Also, it should be noted that KaUR was electrified - Two "high" power, paving the extensive cable network. Kaur is located in the southern part of the Karelian isthmus through Sestroretsk - Beloostrov - Medniy Zavod - Lembolovo - Katumy - Nikulyasy.