Shadow zone, an area in which a secondary seismic wave is not detected due to it not being able to pass through the core of the earth
The Twilight Zone | The Twilight Zone (1959 TV series) | Negative Zone | Panama Canal Zone | Eastern Time Zone | Twilight Zone | The White Shadow | Robotech: The Shadow Chronicles | DJ Shadow | The Shadow | Shadow Cabinet | Korean Demilitarized Zone | The Dead Zone (TV series) | The Dead Zone | Pacific Time Zone | Hardiness zone | Central Time Zone (North America) | Ponce Historic Zone | Metekel Zone | Batman: Shadow of the Bat | Arsi Zone | The Twilight Zone (2002 TV series) | O-Zone | Moonlight Shadow | Mirab Welega Zone | Hadiya Zone | Gamo Gofa Zone | Debub Omo Zone | Zone | Semien Omo Zone |