Trölladyngja, Grænadyngja og Sogin - Iceland

Trölladyngja is a hyaloclastite mountain to the north of the ridge Núpshliðarháls. South of Trölladyngja and Grænadyngja, a small stream called Sogalækur has formed a small gorge, depositing a considerable amount of colorful geothermal clay there, making it a remarkable sight.

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