Hljóðaklettar are special rock formations by the river Jökulsá á Fjöllum in a valley called Vesturdalur between Ásbyrgi and the waterfall Dettifoss. It contains amazing basalt columns that formed where water and flowing lava have coexisted. The columns are very diverse and are both horizontally and vertically. There is a small cave in Hljóðaklettar formed by basalt columns.
There are a lot of hiking trails in Vesturdalur valley and Hljóðaklettar, Vesturdalur is a grassy valley with small trees and on the other hand is the canyon Jökulsárgjúfur so there is a lot of contract in the nature making the area even more interesting.
The road to Hljóðaklettar (road number 862) is only open during the summer.
The drive from Reykjavik to Hljóðklettar is about 6,5 hours (540 km) and about 2 hours (160 km) from Akureyri. From Ring Road nr. 1 take road nr. 85 and then road nr. 862.