Just a short, easy stroll from the car park, you'll find Barnafoss, a place where the river seems to boil with energy. Unlike classic waterfalls, this is a series of powerful, churning rapids forcing their way through a narrow gorge of dark volcanic rock, creating a stunning contrast with the brilliant turquoise water. It's right next to the serene Hraunfossar falls, so you get to see two completely different, yet equally mesmerizing, natural wonders in one quick stop.