KaUR located in the strip 30-50 km from S-Petersburg city.
The main defensive line consist of 10 BDRs - from Sestrorezk BDR (battalion areas of defense) on the west up to Nikuljassky BDR on the east. There are 5 BDRs in the rear defensive line. Installations of Sestrorezk, Beloostrov, Lembolovo and Elizavetino BDRs are most accessible. I recommend to use the 2-km scale map "Karelian isthmus - 1938-2001. A history and present time" (35 rubles cost) where majority of KaUR installations are present.