This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Last submarine mine being exploded at Fort Lytton on closure of minefield Easter . en The electrically remote controlled minefield was laid across the mouth of the Brisbane River during times of emergency First introduced in the it was finally closed in Old Print author other versions Custom marker PDAustralia Fort Lytton