Part of the southern wall of the UNESCO World Heritage Site of Derbent was destroyed by prolonged rains.This was announced by the first deputy chairman of the Derbent city administration Rustambey Pirmahammadov on his Instagram page."As a result of prolonged rains, part of the southern wall of the fortress near the so-called Middle Gate collapsed. This is a big emergency for the city. The southern fortress wall is included in the UNESCO World Heritage List, "Pirmahammadov commented on the photos.