MOSCOW'S UNDERWORLDS

Russia - the sheer size of the country sparks endless speculation. Add to this the extraordinary climatic conditions. Over decades, successive autocratic leaders have persuaded the people to embrace their ideologies, demanding both tributes and unwavering obedience. In this world, the secrecy of Soviet rule and the deception and camouflage tactics of the Cold War seem to fit perfectly. Beneath the capital, Moscow, there is rumored to be a hidden tunnel system - built during the Cold War and allegedly still operational today. Could it be true?