A conspicuous feature of the New Mexican landscape is the mesa, a flat-topped hill created by differential erosion and projecting above the surrounding country like a table.
From various points the traveller can look over the city, with its great citadel, its many minarets and its flat-topped houses.
The midland region is characterized by grass lands (the Natal grasses are long and coarse) and by considerable areas of flat-topped thorn bush mimosa.
These chapadas and elevations, which are usually described as mountain ranges, are capped by horizontal strata of sandstone and show the original surface, which has been worn away by the rivers, leaving here and there broad flat-topped ridges between river basins and narrower ranges of hills between river courses.
The chief heights in Natal between Mont-auxSources and Laing's Nek are Tintwa (7500 ft.), Inkwelo (6808 ft.) and the flat-topped Majuba (7000 ft.).
Behind Eshowe, in the south, are the Entumeni Hills (3000 ft.), beyond which stretch the Nkandhla uplands (rising to 4500 ft.) densely wooded in parts and abounding in flat-topped hills with precipitous sides.
Are several flat-topped mountains, of which Raccoon and Lookout are the most prominent, having a maximum elevation near the Georgia line of little more than 1800 ft.
Oftener the summit of the ridge is broken into individual mountains, broadly flat-topped and of nearly equal elevation..
Some of the culminating points in these ranges are the Cerros Yaparana (7175 ft.) and Duida (8120 ft.) in the Parima sierras near the upper Orinoco, the Sierra de Maraguaca (8228 ft.), and the celebrated flat-topped Mt Roraima (8530 ft.) in the Pacaraima sierras on the boundary line with Brazil and British Guiana.
The flowers are sweet-scented, in flat-topped clusters, and 2 to 4 in.