Glymur Waterfall is one of Iceland's tallest waterfalls, standing at 198 meters high. Accessible only by hiking, this adventure includes a walk through a cave, two river crossings, and stunning views of the waterfall. The hike is relatively short, fun, and offers a different perspective of the waterfall from the west riverbank. It's a must-do for nature lovers looking for a unique experience near Reykjavík.