They scrambled across the vast sheets of rusted, corrugated metal that had abruptly turned from imposing wall to giant bridge.

At its best, the band create an imposing wall of sound, often built around staccato riffs and scalar patterns.

The exterior of the theatre was originally lined with two-level verandah balconies, which provided relief to the imposing walls.

While certain individual elements presented imposing walls to an attacker, these walls were not continuous.