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Underground waters

Groundwater and aquifers are types of underground waters.

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Travertine Terraces

Find out the secret of the unique beauty of travertine terraces.


It is a sedimentary rock with high calcium carbonate content.

The Wallace line

The Wallace line divides the fauna of Asia and Australia.

The East African Rift

The Great Rift Valley in East Africa was formed as a result of the...

The giants of the Solar System

This lesson introduces you to the outer planets of the Solar...


It is a sedimentary rock made up of loosely structured, rough...

Afrika - The geological anatomy of a continent

A video on the geological formation and geographical divisions of...

Coal formation

This video presents the different stages of coal formation.

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