Hljóðaklettar, or “Echo Rocks,” is a distinctive geological formation located in the Jökulsárgljúfur canyon, part of Vatnajökull National Park in northern Iceland. Known for its striking columnar basalt formations, these rocks exhibit intricate, honeycomb-like patterns formed by ancient volcanic activity. The area is named for its remarkable acoustic properties, where sound waves create clear, sometimes eerie echoes.

Situated within the dramatic landscape of the Jökulsárgljúfur canyon, carved by the Jökulsá á Fjöllum river, Hljóðaklettar is a popular destination for hikers and nature enthusiasts. Visitors can explore various trails to experience the unique rock formations and the rugged, scenic beauty of the canyon.