Call of Cthulhu: Skullhouse
"Gunfire on Red Rock Hill Actually Blank Cartridges"
Weekend Emergency Work By The DPW
Examiner 26 Sept. 1921
Gunshots and an explosion heard by citizens in the vicinity of 16th and Castro were a result of an emergency job undertaken by members of the Department of Public Works.
A charge of dynamite was used to collapse a tunnel beneath the old Gray Brothers brick works high on the east face of Red Rock Hill. This tunnel presented a very grave and immediate danger to houses downslope and its destruction in a prompt and safe manner will ensure that no landslides occur, such as those which are a subject of litigation, elsewhere on the hill.
The gunshots heard by members of the public were blanks fired to warn the members of the crew of the impending explosion.