The Pieprzowe Mountains being as old as around 500 million years owe their name to the colour of their rocks (“pieprzowe” meaning “of pepper” in Polish). The so-called argillaceous schist oxidised under the influence of atmospheric conditions and then crumbled to resemble pepper. Now they constitute a unique on the European scale geology and nature reserve dominated by wild rose and junipers with their navy-blue berries. A beautiful view over the Vistula Valley and the Old Market located on and the Old Market located on the reserve. The other precious monument of nature in Sandomierz is a deep loess ravine locally as deep as 10 m and as long as 400 m. This is the place where the Queen Jadwiga, born around 1374, used to stroll along while visiting Sandomierz.