in 1991, the decision was taken to create a National Park in the area. All historical monuments were transferred to the park administration, and some of them have been restored. December 28, 1991 the park was officially created. The staff of the park at the time of creation was 7 persons.[2] In 1992 it was increased to 35 persons,[3] and in 1993 to 153.[4] In 2004, the park became a UNESCO Biosphere Reserve.