Hakalau Bay is a rather well kept secret with locals, and it's a favorite for many of them. It's a very Big Island style beach, meaning there's not really a beach but small black stones at a river mouth opening into the ocean. A highway bridge crosses over the river, and if you look up you'll notice that the bridge was originally a highway track turned upside down to be used as a road. The water is a bit murky, but the place is beautiful and a great place for history buffs and photographers to have fun visiting the ruins of the Hakalau Mill, which was ruined in the tsunami of 1946. They are scattered around the rocks and parking lot.