Fort Casey is located along the coast of Whidbey Island. It is one of three forts conceived and built in the late 1800s – early 1900s to protect the entrance to Puget Sound from naval invasion (the others are Fort Worden and Fort Flagler). The invention of the airplane rendered the three forts essentially obsolete almost immediately after their construction.
The above image is part of the ammo hoist system used to bring 300 pound shells from the powder room below. Below is one of the huge guns in its firing position.
© All images Brad Skiff