June 13, 2010 the Subbothik was held at KaUR (Karelian Fortified Area). Two two-floor bunkers were cleaned from garbage and greenery - 3-embrasures MG-bunker and command-and-fire post in Lembolovo BRO (battalion defense zone). The event has been organized by KIF (History Fortification Club) and Silver Ring company].
*Subbotnik - special event when people works in their holiday free and voluntary.