Mt. Miroč doline karst evolution and its determining factors such as geology, relief and structure are analyzed using GIS tools. The 3064 dolines found in a 123 km2 area support the use of different statistical methods. Doline density (24.9 km-2) is relatively high and mean doline area (1697 m2) is relatively small. Both frequency analysis and field evidence suggest that doline karst evolution of the area is at a relatively young stage. Spatial distribution of the dolines is mainly determined by the Upper Jurassic limestone, and slope angle less than 12°. Furthermore, the anticline limbs and axis as well as the SW-NE trend fault lines are also in connection with doline density. However, doline long axis orientation is tpyically NW-SE, which is not in accordance with the observed rupture systems. Therefore, this issue requires further research.