Halda Terezia - Ema i.e. the Ostrava volcano

Halda Terezia - Ema is a striking cone that rises above Ostrava.
In good weather there is a nice view from the top of the heap.
Nothing obstructs the view of Ostrava from south to north.
On the eastern side, part of the view is obscured by birch trees.
The heap is also interesting in that just below the top we can observe fumes, which are places where coal burns under the surface and smoke rises from there.
This phenomenon is the Cause of…