Part 4/7:
As the Cold War escalated, the tunnel served not only as a safe haven but also as a high-security site for storing parts of some of the world's most dangerous weapons, including the hydrogen bomb. Los Alamos became the first place in the United States to warehouse these components, all within the safety of the canyon's ancient rock formations. This discreet geological hideaway provided the perfect environment, with its natural protection from potential nuclear fallout.