The a challenge for thousands of years for Djerdap ‘Iron Gate’ Gorge has been travellers, traders, warriors and peacemakers. Its Iron Gate connects two important cultural and economic parts of Europe, making Djerdap a strategic place with enormous importance, both in times of war and peace, as witnessed by a large number of historical monuments. Djerdap is the biggest river gorge in Europe, created where the mighty Danube broke through the Carpathian Mountains and some 90 kilometres long. It is made up of four gorges: Golubac, Gospodjin Vir – which has a tourist centre at Lepenski Vir, Kazan (the deepest stretch of the river at 90 metres) and Sipska, as well as three ravines: Ljupkovska, Donja Milanovac Ravine and Orsavska Ravine. Being such a powerful and intensive centre of life from prehistoric times to the present day has served to make Djerdap National Park the largest in Serbia. Tis protected area includes ten nature reserves, ten sites of natural heritage, history and beauty, with the great river passing Lepenski Vir, Great and Small Strbac with Trajan's Tablet, Golubac Fortress, the BosmanSokolovac nature reserve, Coka Njalta with Pesaca nature reserve, Bojana, Tatar Heights, Mount Somrda, Ciganski (Gypsy) Stream and Boljetin River Canyon – Greben Cape. Te Djerdap area has always been characterised by an exceptional variety of wildlife, as evidenced by the records of numerous travel writers.