studlagil basalt canyon, with rare volcanic basalt column formations and blue river from glacier melting water. iceland

basalt iceland canyon studlagil volcanic column landscape cliff scenery rock outdoor scenic landmark nature mountain river tourism glacier melting trip wall water stunning nordic icelandic travel view environment destination beautiful splendid island country jokuldalur natural formation vacation north geology columns stone incredible holiday spectacular jokulsa summer rural stream countryside dramatic cascade picturesque background tourist tour breathtaking attraction stones rocky panoramic jokla highlands hidden flow extreme discovery atlantic amazing sunset valley