Bláhylur, also known as Hnausapollur, is a stunning crater lake in the Icelandic Highlands. Formed during a volcanic eruption in 871, this picturesque spot offers travelers a chance to admire its deep blue waters against the surrounding colorful landscape. Visitors can easily walk down to the lake for a closer look or take in the panoramic views from the crater's highest point. Located near Landmannalaugar, Bláhylur is a must-see destination for those exploring the beauty of Iceland's rugged wilderness.