Hljóðaklettar(translates: sound rocks) or Echo Rocks like they are sometimes called are a collection of basalts columns. They are the remains of an ancient volcano’s which have been eroded by the Jökulsá river. These unique formations, arches, and caves are one of a kind and it seems like they have formed in every direction. There are two marked paths in blue from the parking lot that is ideal for a short hike. They are an easy stroll, one will take about 30-40 minutes (1km) and the Circle path takes about 1, 15 -1,5 hours(3km). The paths that are marked in red are longer and a bit more difficult.