Found this lamp next to a "generator" the ones that stand in the sircle of the small burning fields.. anyway, it was blinking strangly, so i assume it morse. This was under the "new" tower. The tower the furthest away from the dam. Or closest to the peninsula with the lighhouses, if you will.
If you follow the road from the peninsula you will find the lamp post just after you pass the small bunkers under the 1 tower.