Trongsund Fortress ( Swede. Trångsund ) is a defensive system of the 19th century, the remains of which are preserved on the outskirts of the city of Vysotsk . It was created on the islands of the Vyborg Bay to protect the water approaches to Vyborg .
| Fortress | |
| Trongsund Fortress | |
|---|---|
 | |
| A country |  Russia |
| Location | Vysotsk city, Leningrad region |
| Construction | 1864 |
| Status |  Identified object of cultural heritage of the peoples of the Russian Federation ( normative act ). (Wikigid database) |
| condition | partially destroyed |
The first fortifications on the island of Vysotsky were built during the Northern War in order to protect Vyborg, besieged by Russian troops, from the sea. The name “Trongsund” (lit. - narrow strait) comes from the Swedish name for the strait between the Vysotsky and the Small Vysotsky islands, the width of which at the narrowest point is about 180 m - this is the main of the three fairways leading to Vyborg. In 1710, when the city of Trongsund (now Vysotsk) was founded, batteries already existed - they waged successful battles with the Swedish fleet. No traces of the buildings of the Petrine period have been discovered so far.
The creation of the fortress that has survived to this day began a century and a half later, in 1864, and was completed in 1867. The Trongsund fortress was a rather powerful complex of batteries, bastions, casemates cut down on the coast of the strait directly in the granite rocks of the island, however, due to the rapid development of firearms and artillery in this period, by the 1880s it was outdated and was considered ineffective. Initially, to control the Trongsund Strait, “8-inch Krupov guns were installed, namely two in the Transund redoubt and four in the Pechersk battery”.
By the beginning of the 20th century, the fortress was disarmed and did not participate in the First World War . After 1917, the city of Trongsund, together with the fortress, like the entire former Vyborg province, moved to independent Finland and became known as Uuras. Since then, the Trongsund fortress has not been used (not counting the episodes of the Winter War , when battles were fought on the territory of already abandoned fortifications) and is gradually being destroyed.
Currently, the territory of the fortress is overgrown with forest. Earthen moats, gorges, curtains, interior rooms lined with granite blocks have survived, most of them in ruined condition.
Exterior walls
Earthen moat
Fortress on the old Finnish map (marked in red)
