The ‘echo rocks’ or Hljóðaklettar, are a collection of basalt columns lying in every which direction to create unique formations and arched caves that are known to create eerie echoes and reverberations. The rocks are located at the entrance to Vesturdalur, in the Vatnajökull National Park. The signs at the newly developed overlook parking area called this place "The Lava Church" now.
Hljodaklettar are a bizarre looking group of crater plugs, the remains of ancient volcanoes. They have been heavily eroded by the foaming glacial river, depicting basaltic columns in different positions. They create all kind of patterns – swirls, spirals, rosettes and honeycombs. This is what makes them unique in the world. It is a great experience to walk among the cliffs and strange rock formations. It’s easy to imagine being on an alien planet in a far off solar system. Hljodaklettar (“Echo rocks” or “The Whispering Cliffs”) derives its name from an acoustic effect and strange echoes, created by the numerous caves and uncommon rock formation. It makes it impossible to determine the directions of the noisy rivers. It is interesting to listen to the cliff acoustic near the river.
Located in Jökulsárgljúfur canyon in Northern Iceland, Selfoss waterfall is one kilometer south of the enormous waterfall Dettifoss. It is fed by the glacier river Jökulsá á Fjöllum with its routes in Vatnajökull glacier. Jökulsá á Fjöllum is also the second-longest river in Iceland with a length of 206 kilometers, flowing into the Greenland Sea. The glacier from which this river originates is the largest ice cap in Iceland that makes 8 percent of the country’s landmass.