The reservation of Stânca-Costești has great geological and flora complexity. It is situated in the sub-area of siolvosteppe of Moldovei Field, and has the shape of a calcarous spear, made up of clay and loess deposits, known as the “Lady’s House”. This picturesque carstic reef hosta a rare thermophile plant, Schivereokia podolica. For this species, the area of Stânca Costeşti is the most western part of its habitat. The natural Taxus baccata reservation is alo worth mentioning in Dealu Mare – Tudora.