Discussion of a recent paper: M. H. Ghobadi; M. Torabi-Kaveh; M. Miri; N. Mahdiabadi; An introduction to the karst geomorphology of the Bisetun–Tāq-e Bostan historical region (northeast Kermanshah, Iran) with special emphasis on karst development as a serious threat for the UNESCO World Heritage Site, Bulletin of Engineering Geology and the Environment, DOI 10.1007/s10064-014-0662-0
