Tucked away on Oahu is a valley hike with a hidden swimming hole and a forgotten bunker. This one actually consists of a long tunnel and bunker system that goes on for quite a while. Someone decided to spray paint an image of Mighty Mouse on one end of the bunker, hence the name that I made up for it during our hike, Mighty Mouse Bunkers. Appropriate, right? You’ll need a headlamp for this one.