By the way, Lake Ladoga in this case, it could be seriously above the current level, flooding the land to its south shore line to the limestone cliff. That is, at the mouth of the Volkhov - Ladoga and to the level of Lyubsha. It is possible to find one more confirmation. As I said Petr Sorokin, all settlements in Izhora Neva are not located in the river valley, and farther away from it, in the high places in the limestone cliff area. He believes this is evidence that there was an active movement of the Neva River, and it was dangerous to live on its banks. But maybe settlements distant from the present shores precisely because banks were themselves elsewhere?