Egypt is one of the most rich countries world–wide in its archaeological remains as well as the geological heritage that almost has not been discovered till now requiring much investigations through major projects under the umbrella of international institutes. Farafra Oasis and its surroundings in the heart of the western desert of Egypt, has some high geomorphic landforms of chalky limestone constitute an attractive geological heritage. The main aims of the current study are to investigate the weathering processes acting and developing the different landforms at the White Desert, grouping these landforms, and to find out the developing stages of Mushroom as one of the most common landforms at this White Desert. Field investigations including slope angle measurement on opposite sides of some landforms, measuring weathering depth and detection of weathering profile, sampling on both sides of some representative landforms as well as photo-documentation of the weathering features at these forms have been conducted. Laboratory investigations including testing rock's mineralogy, geotechnical properties and durability to weathering have been conducted. The detailed field and laboratory investigations revealed that the rock at the White Desert is pure snow white chalk, it is salt resistant for the reference samples, altered by weathering to salt prone for the west facing side and very salt prone for the east facing sides' samples of some representative landforms. Diurnal and seasonal contrasted climatic changes, wind-blown with medium size sand play an effective role in rock's weathering at this desert.

Keywords: Geological heritage; White Desert; Farafra Oasis; Western Desert; Egypt