a southward-projecting spur of the Carpathian Mountains, in northeastern Hungary. It comprises a forested highland area extending some 30 miles (50 km) from the Tarna River on the west to the Sajó River in the east and 20 miles (32 km) from north to south. Maximum elevation is reached at Mount Istállóskő (3,146 feet 【959 m】). The central core of the Bükk is a 12.5-by-4.5-mile (20-by-7-kilometre) limestone plateau (called Giants' Table) with a rim of white cliffs dominating the surrounding lower mountains. The Bükk is an intensely folded and faulted block range. Along fault lines south of the Bükk are volcanic tuffs and lavas and post-volcanic hot springs. The Bükk, with a continuous tree cover for the most part, is one of the most rugged areas in Hungary. It is a much-frequented resort area—once-exclusive hotels and resorts at Lillafüred, Noszvaj, Jávorkút, and Szilvásvárad are now vacation centres for workers. Trout fishing and hiking are summer attractions. A long snow cover (120 days) encourages winter sports. Throughout the ranges are traces of prehistoric settlement.