So much mention these days the biggest Polish chronicler - Jan Dlugosz. Clear that this is a fabulous antiquity, but - as some have claimed - each blade of the legend may be the truth. In any event, these two mounds exist. Many scholars have tried various ways to explain their origin. There are various hypotheses, more or less plausible, but none of them, unfortunately, does not give a hundred per cent sure how it really was.untouched army triumphantly and proudly escorted to Krakow.