Part 3/7:
Constructed in 1948 as the Cold War ignited, the tunnel was built amid swirling fears of nuclear threats. Los Alamos held a unique position at this time, serving as a hidden fortress for researchers and scientists dedicated to developing new weapons technology. At the height of these tensions, the townsfolk lived under stringent military regulations; the area was off-limits to the public, and entry required a government pass. Buildings erected during this era prioritized fallout shelter designs, demonstrating the magnitude of fear prevalent in society.