page_title: South-Eastern Finland fortification system
hierarchical_section_title: South-Eastern Finland fortification system
caption_attribution_description: Suomi: Kärnäkosken linnoituksen ravelliini.
context_page_description: South-Eastern Finland fortification system is an extensive defensive system formed by three concentric fortress chains in South-East Finland built by Russia in the 1790s. The purpose of the fortification system was to protect the capital of the Russian Empire, Saint Petersburg, from a possible Swedish attack.
context_section_description: South-Eastern Finland fortification system is an extensive defensive system formed by three concentric fortress chains in South-East Finland built by Russia in the 1790s. The purpose of the fortification system was to protect the capital of the Russian Empire, Saint Petersburg, from a possible Swedish attack.
caption: Kärnäkoski fortress
exif: {}