Basalt is the most common extrusive igneous rock, the colour of which ranges from grey to black.



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The unique beauties of the karstic caves are called dripstones.


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The dissolution of limestone results in the development of karst formations.


It is a sedimentary rock with high calcium carbonate content.


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


Rocks are a composed of minerals. These minerals can often be found in their pure forms.

Mysterious hexagons

This video is yet another proof that nature can create a surprisingly diverse range of shapes and forms.

Salt Production

The evaporation of seawater provides an excellent opportunity for coastal countries to produce salt.

Sedimentary rock

Did you know that about 75% of the land on our planet is covered with sedimentary rock?

The process of physical and chemical weathering

Upon physical weathering the rock only falls into pieces, whereas during chemical weathering its chemical structure changes too.

The rock cycle

Due to the effect of both exogenic and endogenic forces, rocks constantly change. This is called the rock cycle.

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