The northern alpine range in Austria is a typical karst landscape with numerous gorges formed by creeks that deeply cut into the limestone. These gorges are often inaccessible due to the steep terrain. Here, this creek falls into an unexplored cave system within the mountain. Such geological features form when carbonic acid erosion occurs. The rain water of the creeks is naturally aerated. This causes chemical reaction with the limestone bedrock resulting in the erosive force that forms deep gorges and caves.
Pentax K2, Pentax 28mm, f/22, 16sec, Kodak Ektachrome E6, ISO 100, tripod