Petzen (German) or Peca (Slovene) is the highest mountain of the eastern Karawanks, the second-highest mountain of the Northern Karawanks and the most eastern two-thousand-metre mountain of Slovenia. It is a mighty mountain with a characteristic shape of a tableland with rocky peaks protruding from it. The mountain borders the Meža Valley and the Topla Valley to the south and east, and the Jaun Valley to the north, and is separated by the narrow valley of the Bela Creek from Hochobir. Two thirds of the mountain lies in Austria, and one third in Slovenia. The mountain reaches its highest elevation on the mountain crest of the Kordež Head (Slovene: , German: , ). The border runs across it.