Kraški skalni relief v Qari in Beli puščavi (Zahodna puščava v Egiptu)

The karst rock relief clearly reveals the ways in which the karst surface and caves have been shaped and how they have developed. The oldest traces are the rock features of old karst caves, which were formed under climate conditions entirely different from the current ones, i.e., in the Pleistocene, and which have been dry for a longer period of time. Today, the wind is the prevailing factor in shaping the rock on the surface and in the karst of the White Desert near Farafra in particular, where we can witness the development of an entire range of wind rock features which helps us sort and classify them logically. However, in the wadis near the Qara Oasis a unique rock relief is forming, in which traces of water flow and dissolution of the rock under the sandy deposits are utterly predominant. The rainfall volume is low, however, the heavy rainfall events lasting short periods of time are enough to shape the less resistant rock. The rock features dominating the walls are co-shaped by dissolution and aeolian erosion. Crust forms on those parts of the rock surface that come in contact with water. The bare surfaces, on the other hand, are carved out by the wind. In the places where the crust has flaked off, the wind carves out cups.Kraški skalni relief tudi tokrat povedno razkriva način oblikovanja in razvoj kraškega površja ter jam. Najstarejše sledi so skalne oblike starih kraških jam, ki so se oblikovale v povsem drugačnih podnebnih razmerah od današnjih v pleistocenu in so že dlje časa suhe. Danes je prevladujoč dejavnik oblikovanja skale na površju veter in zlasti v krasu Bele puščave pri Farafri se razvija celoten nabor vetrnih skalnih oblik, ki služi tudi za njihovo smiselno razbiranje in razvrščanje. V vadijih pri oazi Qari pa se oblikuje svojevrsten skalni relief, v katerem povsem prevladajo sledi pretakanja vode in raztapljanja skale pod peščeno naplavino. Padavin je malo, a izrazitejša količina v kratkem časovnem obdobju je dovolj za oblikovanje slabše obstojne kamnine. Skalne oblike, kakršne prevladujejo na stenah, pa sooblikujeta korozija in vetrna erozija. Na delih skalne površine, ki jih dosega voda, nastane skorja. Gole površine pa dolbe veter. Na mestih, kjer se skorja odlušči, veter izdolbe vdolbine