The fog rolled in, and we couldn't see far.

Literal

Fog [subject-が] rolled-in [and], view [subject-が] did-not-work.

見晴らし ('view, outlook, panorama') + きく ('be effective') = 'the view works' / 'there's visibility.' Negative きかない = 'the view doesn't work' = 'cannot see far.' The te-form links cause and effect.