Petr Hykš:
Brno - Lesní lom (panorama)
Petr Hykš:
Overturned fold (detail)
Petr Hykš:
Overturned fold
Petr Hykš:
Devonian crinoid limestone
Petr Hykš:
Devonian seabed with crinoid fragments (detail)
Petr Hykš:
Mokrá Quarry
Petr Hykš:
Shales and sandstones of Carboniferous flysch (Culm facies)