Olsenbanden tar gull

Olsenbanden tar gull is a 1972 Norwegian comedycrime film of the Olsen Gang film series, directed by Knut Bohwim.

They locate the bunker, but it is sealed with a thick wall of concrete. They try to blow their way through, but dynamite cannot make a hole in the wall, so they try to hack their way through with a miners pickaxe.The villain however, is armed with a harpoon and he tries to shoot them, but he is accidentally knocked out by one of the Olsen Gang members. He then retaliates by kidnapping Basse, the son of the gang member Kjell. The clever boy manages to pull the carpet away from under the villains feet, causing him to fall. He then escapes. ........

Source: Wikipedia