sentences:  The National Park covers an area of 346.11 km² (133.64 mi²) and its buffer zone covers 117.41 km² (45.33 mi²).The park was established on 1 March 2002, after being a protected landscape area since 1973.Slovak Karst is the first Slovak biosphere reserve since 1 March 1977, when it was included in the UNESCO's Programme on Man and the Biosphere.