How do you find and map a nuclear facility buried under 80 meters of solid rock without ever touching the ground above it? For decades, Iran believed their mountain fortresses were invisible and unbombable. They were wrong. In this episode of Grand Structures, we explore the "Siege of Stone"—the se
16:34
27:40
21:26
24:55
204:38
10:56
19:19
20:56
14:29
20:57
25:27
22:52
19:41
17:55
18:20
10:04
32:04
24:53
16:39
23:55