A small karst lake with turquoise water clear to the bottom, fed by a spring beneath it and hidden in the forest of the Bei valley, in the Cheile Nerei – Beușnița National Park.
Top 100Romania's largest glacial lake, at 2,040 m in the heart of Retezat National Park; it can only be reached on foot, after a climb of about two hours from Poiana Pelegii.
A reservoir on the Ialomița at 1,438 m, in the heart of the Bucegi Mountains, held back by a 55 m stone dam and ringed by spruce forest, between the Tătaru and Zănoaga gorges.
Top 100Romania's only volcanic lake: an almost round sheet of water in the Ciomatu crater, ringed by forest, with a Catholic chapel on the shore and the Mohoș peat bog in the neighbouring crater.
Romania's deepest glacial lake, 29 m deep, at almost 2,000 m in the south-west of Retezat National Park; it can only be reached on foot, on a long day hike.
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