Geologically, Elztal consists of sandstone on top of gneiss. During the Ice Age parts of Elztal were covered by Kandel´s glacier and formed Moraines that are still visible. The glacier stems form repeated freezing and thawing, permitting the formation ice. Under pressure of ice it fuses into firn; layers of firn become then glacial ice containing air bubbles, giving it a blue colour. Glaciers don´t need a slope, they are being driven by the accumulation of new snow. Snowfall creates a sufficient depth of ice to exert a downward force sufficient to cause deep erosion of rock. Moraines are formed from deposition of material from a glacier and are exposed after glaciers have retreated.
If glaciers ice sheets advance irregularly they form clay.
As glaciers were retrieving, they made room for plants and wildlife.
On Elztal meadows you will find Dandelions. In German it is called Löwenzahn, lion's tooth. A bright yellow flower is held on a hollow stem rising above the leaves and extrudes milky latex. This seed is called dandelion clock, and blowing it apart is a popular sport amongst children. While the dandelion is considered as unwanted weed by most gardeners, the plant has several medicinal uses. Dandelions can also be eaten cooked or raw in various forms, such as in soup or salad. Raw leaves have a slightly bitter taste. Dandelions are similar to catsear also known as False Dandelion, whereas catsear's stem is solid, and dandelions possess hollow stems. Drinking dandelion wine before a meal is believed to stimulate digestive functions, however it should be mentioned that uncooked dandelions have a diuretic effect. Dandelion is a drug in Canada, and being sold as diuretic.