Spiertin 06: Nicht verpassen: Moräne!
Do you recognize the moraine in your environment? If not, look at the photo, there the stone wall is marked.
If you could see thousands of years into the past, you would see that the glacier was sometimes longer and sometimes shorter. Glacier advances alternated with glacier retreats. Especially the advances left such moraines as this one. How old do you think this moraine is? You can find the answer in the audio. The audio file can be found at the back of the pictures.
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