Glymur Waterfall is one of Iceland's tallest waterfalls, standing at 198 meters high. Accessible only by hiking, this adventure includes a cave walk, river crossings, and stunning views of the waterfall. The hike can be done as an out-and-back or loop trail, with the loop offering a unique perspective of the waterfall from the west bank. It's a moderate hike that takes about 3 to 4 hours to complete, making it a great addition to any trip to Iceland, especially for those looking for a fun and scenic outdoor experience.