Another point of disturbance is on the western plateau in N. lat. 28° 26′, E. long. 28° 49′, some 11½ kilometres north-west of El Qasr. Here (Fig. 2) along a N.E. and S.W. line, crossing an otherwise level plateau, the Eocene beds, and probably also the Cretaceous below, are thrown up in a sharp anticlinal fold, which however, is not continuous but consists of a number of isolated bulges, with dips up to 50°. The plateau at this point consists of Eocene Operculina and Nummulitic limestone, and the effect of the anticlinal fold is to expose the beds of sandstone below, which, as already mentioned, are probably Cretaceous. [Illustration: Fig. 2.—Sketch showing probable relations of Eocene and Cretaceous in anticline on Western Desert plateau, 11½ kilometres N.W. of El Qasr. EOCENE.—1. Grey crystalline limestone. 2. Hard white gritty chalky limestone. 3. Grey calcareous sandstone. 4. Limestone with _Nummulites_ and _Operculina_. UPPER CRETACEOUS.—5. Calcareous-grit. 6. White sandstone. 7. Crystalline limestone. 8. Cenomanian clays and sandstones with _Exogyra flabellata_, _E. Mermeti_ and _E. olisiponensis_, etc.] With regard to the age of the tectonic movements which produced the synclinal and anticlinal folds of Baharia, it must be admitted that it is not easy to speak with absolute certainty, owing to want of evidence at one or two points. It appears certain, however, that they belong to two great movements, separated by a vast interval in time. The first disturbance of the beds would appear to have taken place at the end of the Cretaceous period, when it seems probable that the area in question underwent upheaval into dry land. It seems tenable that it was during this movement that the large flat anticline, so well seen in the south part of Baharia and in the north of Farafra, was produced, as the Eocene beds forming the plateau immediately to the east of the Cretaceous beds do not show any sign of disturbance.[60] The subsiding Cretaceous land, on which these Eocene deposits were laid down, must therefore have had the form of a long, flat, irregular ridge of anticlinal structure, probably extending from Dakhla through the oases of Farafra and Baharia to Abu Roash.