A memorial cross 12 m high was erected on the top of Ostrytsia Mountain, called the Spire, without the consent of the conservation authorities, in memory of the last battle in the open field of the prince's wife with the Mongol-Tatars Batu in the summer of 1240. and it attracts people to the reserve, which negatively affects the population of feather grass, the biocenosis of the reserve. "