Hatay is traversed by the north-easterly line of equal latitude and longitude. 46% of the land is mountain, 33% plain and 20% plateau and hillside. The most prominent feature is the north-south leading Nur Mountains and the highest peak is Mığırtepe (2240m), other peaks include Ziyaret dağı and Keldağ (Jebel Akra or Casius) at 1739 m. The folds of land that make up the landscape of the province were formed as the land masses of Arabian-Nubian Shield and Anatolia have pushed into each other, meeting here in Hatay, a classic example of the Horst-graben formation. The Orontes River rises in the Bekaa Valley in Lebanon and runs through Syria and Hatay, where it reserves the Karasu and the Afrin River. It flows into the Mediterranean at its delta in Samandağ. There was a lake in the plain of Amik but this was drained in the 1970s, and today Amik is now the largest of the plains and an important agricultural center. The climate is typical of the Mediterranean, with warm wet winters and hot, dry summers. The mountain areas inland are drier than the coast. There are some mineral deposits, İskenderun is home to Turkey's largest iron and steel plant, and the district of Yayladağı produces a colourful marble called Rose of Hatay.