The Jadovno concentration camp was a concentration and extermination camp in the Independent State of Croatia (NDH) during World War II. Commanded by Juco Rukavina, it was the first of twenty-six concentration camps in the NDH during the war. Established in a secluded area about 20 kilometres (12 mi) from the town of Gospić, it held thousands of Serbs and Jews over a period of 122 days from May to August 1941. Inmates were usually killed by being pushed into deep ravines located near the camp. Estimates of the number of deaths at Jadovno range from 10,000 to 68,000, mostly Serbs. The camp was closed on 21 August 1941, and the area where it was located was later handed over to the Kingdom of Italy and became part of Italian Zones II and III. Jadovno was replaced by the greater sized Jasenov