Podpeško jezero
A small karst lake at the foot of Krim on the southern edge of the Ljubljana Marsh, only about 120 m across. The bottom slopes gently to about 10 m, then a near-vertical shaft drops in the middle and narrows at 25 m into a tight underwater cave passage. In summer the surface is around 25 °C and the shaft about 15 °C; thick silt means visibility can go to zero with one fin kick. The Slovenian diving atlas treats 25 m as the sensible recreational limit.
Tiefe: 0–25 m