The Buda hills consist mainly of limestone and dolomite, the water created speleothems, the most famous ones being the Pálvölgyi cave (total length 7,200 m or 23,600 ft) and the Szemlőhegyi cave (total length 2,200 m or 7,200 ft). The hills were formed in the Triassic Period. The highest point of the hills and of Budapest is János hill, at 527 metres (1,729 feet) above sea level. The lowest point is the line of the Danube which is 96 metres (315 feet) above sea level. Budapest is also rich in green areas. Of the 525 square kilometres (203 square miles) occupied by the city, 83 square kilometres (32 square miles) is green area, park and forest. The forests of Buda hills are environmentally protected.
Uploaded: Feb 19, 2017