These mountains are mainly rocky though some contain vegetation. Many of the peaks are fairly young and jagged, but some are smoother from weathering. Nearing the Yemeni border, the Sarawat begin to spread into individual peaks, and the Hejaz turns from a cliff to a gradual ascent up to the Yemeni Plateau. In Yemen, the Sarawat are divided into the western and central highlands, where the western highlands receive plenty of precipitation, more than anywhere else in the peninsula, and the central highlands have the highest mountains in the peninsula. A very dramatic part of the Yemeni Sarawat are the Haraz Mountains, where a few peaks top , but the descents and views from the mountains are staggering; some foots of mountains are only at above sea level yet their peaks are at . All of the mountains over are located in Yemen, the highest of which is Jabal An-Nabi Shu'ayb near the capital Sana'a. At , Jabal An-Nabi Shu'ayb is also the highest peak in Arabia.