Nagorno-Karabakh's environment vary from steppe on the Kura lowland through dense forests of oak, hornbeam, and beech on the lower mountain slopes to birchwood and alpine meadows higher up. The region possesses numerous mineral springs and deposits of zinc, coal, lead, gold, marble, and limestone. The major cities of the region are Stepanakert, which serves as the capital of the unrecognised Nagorno-Karabakh Republic, and Shusha, which lies partially in ruins. Vineyards, orchards, and mulberry groves for silkworms are developed in the valleys.