The artillery emplacement at the entrance of Red Sulfur Bay was situated on the west coast of the bay, with a small fortification located across the water on the East Bank.
The two ends of the sea chain that blocked the entrance to Red Sulfur Bay were anchored at the emplacement and the fortification, respectively.
The structure of the fortification was very simple; it was essentially a square shape roughly enclosed by walls packed with earth on all four sides. The base of the square fortification was over a dozen meters wide, and the walls stood just over six meters tall, roughly the height of a two-story building.
In the defense systems of the old era, this fortification wouldn't even be considered significant, being nothing more than walls of earth. It wasn't steep enough, nor tall enough, and didn't even have loopholes for shooting on the parapet.