An interesting geological phenomenon, the Brusnianske Sand Balls are located in a quarry near the village of Chrenovec-Brusno near Prievidza, the TASR newswire reported.
These formations are mainly ball-shaped, but some are oval-shaped or mushroom-shaped.
Some of them measure only 10 centimetres but others are up to two metres tall. They are also a rarity in the world.
These balls prove the decline of the sea from the area of the upper Ponitrie region during the Tertiary era, about 40 million years ago.
22. Nov 2019 at 7:05 | TASR, Compiled by Spectator staff