Trollafoss, also known as Troll Waterfall, is a hidden gem in South West Iceland near Reykjavik City. Tucked away in a small gorge, this waterfall boasts a unique rock formation that resembles a troll's face. Visitors can hike along the rugged terrain to reach the falls and even dip into the lagoon at the bottom. With its stunning scenery year-round, Trollafoss is a must-visit spot for nature lovers looking to explore Iceland's beautiful landscapes.