Dolines are closed depressions in karst relief and are the most characteristic forms in karst landscapes. This study analyzes the spatial distribution and density of dolines in the Biokovo Nature Park. Data on the locations of dolines were obtained through vectorization using 1:25000 scale topographic maps, and morphometric relief data were derived from analyses using a 5x5 m resolution digital elevation model (DEM). The density of dolines was analyzed across different classes of elevation, slope gradient, slope aspect, and vertical dissection of the relief. A correlation analysis was conducted between the density of dolines and morphometric parameters at a smaller spatial scale involving the immediate surroundings of the dolines and at a larger spatial scale covering the entire area of the Nature Park. The paper analyzed and compared the spatial distribution and density of dolines with geological structure. Correlation was conducted between the density of dolines and fault density, as well as the correlation between the density of dolines and the distance from faults. A specific area was analyzed where two methods of defining the boundaries of dolines were used, and based on this, the depths, areas, and volumes of the dolines were calculated. The analysis shows a significant influence of relief morphometry on the occurrence and density of dolines.