Gatklettur, also known as "Hellnar Arch," is a stunning natural stone arch located between Arnarstapi and Hellnar on the Snæfellsnes Peninsula in Iceland. This unique rock formation is a favorite spot for photographers due to its swirling patterns created by the ocean's constant erosion. It's a bit off the beaten path, so you might just have this picturesque spot all to yourself. The best way to reach Gatklettur is by hiking from Arnarstapi to Hellnar, enjoying the beautiful coastline and mountain views along the way.