RT Journal Article T1 El Karst de la Sierra de Urbión (Burgos) T1 The Karst in the Urbion Mountains (Burgos Province) A1 Sanz Pérez, Eugenio AB 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 PB Sociedad Geológica de España YR 1994 FD 1994 LK http://hdl.handle.net/10272/13989 UL http://hdl.handle.net/10272/13989 LA spa DS Repositorio Institucional de la Universidad de Huelva RD 30 may 2026