Lacul Sfânta Ana – Szent Anna-tó (TILOS / no swimming)
No swimming or diving: entering the water has been banned since April 2018. Lake Sfânta Ana fills the crater of the Ciomad volcano near Băile Tușnad, inside the Mohoș nature reserve; it is about 620 × 460 m and at most 7 m deep, and freezes over with up to 1 m of ice in winter.
depth: 0–7 m