Mamalahoa Highway to Punalu`u. In Na`alehu she spotted the tiny sign that she didn’t realize she’d been heading toward until she saw it. She followed the sign off the thoroughfare and bumped down a rough lava road until she saw it. South Point. The southernmost tip of the United States.Mamalahoa Highway to Punalu`u. In Na`alehu she spotted the tiny sign that she didn’t realize she’d been heading toward until she saw it. She followed the sign off the thoroughfare and bumped down a rough lava road until she saw it. South Point. The southernmost tip of the United States....more