Resumen de El Karst de la Sierra de Urbión: (Burgos)
In the present paper the study of the geomorphology of the north face of the Urbion Mountains is presented. The influence of glacial and nival Quaternary factors in the karst relief Is Important. Four types of Karren (Kluftkarren, Hokarren, Fillenkarren and Rundkarren), dolines, suffusion dolines, snow dolines, dry valleys and karst depressions in glaciated terraines are mentioned as the most representative karst landforms
