The book is dedicated to the most interesting and significant phenomena in the early history of the European continent, not reflected in the annals and chronicles of current civilization. The authors tell in a fascinating way about a number of mysteries of history and culture. Who built the Nuraghe towers in Sardinia and why? How could the Stone Age artists, who left their drawings in the caves of the Iberian Peninsula, achieve the high perfection that delights outstanding artists? What was the purpose of Stonehenge? What do the figures of demons mean on the petroglyphs of Karelia and Scandinavia? How did the worship of stones survive a thousand years after the adoption of Christianity? The book contains many interesting facts and original hypotheses of modern anthropology and archeology. It opens a new series from the Veche publishing house, “Mysterious Places of the Earth.”