Reynisdrangar are basalt sea stacks located near the village of Vík í Mýrdal in southern Iceland. Legend has it that these unique rock formations were created when two trolls tried to drag a ship ashore but failed, turning into needles of rock at daybreak. The area is also known for its black sand beach, which has been recognized as one of the most beautiful non-tropical beaches in the world. In popular culture, Reynisdrangar has made appearances in the Netflix series Katla, adding to its mystique and allure.