What it is like living in a bunker near North Korea border

South Korea has resumed loudspeaker propaganda broadcasts into North Korea in response to Pyongyang's claim to have tested a hydrogen bomb.

When North Korea wishes to "flex its muscles" against the south it launches shells across the DMZ into the border areas.

Rupert Wingfield-Hayes visited a bunker in a village close to the DMZ, that has been shelled in the past.