Don’t know how long that took, but that there is funny !
Ping
Probably a longer range version of this -
http://www.armyrecognition.com/north_korea_korean_army_artillery_vehicles_systems/m-1991_juche_100_mrls_240mm_multiple_rocket_launcher_system_data_sheet_specifications_pictures_video.html
This is actually significant as it increases the danger area of a conventional or chemical bombardment of South Korea.