This cover from Hungary depicts a 180 ft. stamp issued in 2002 (the stamp on the right), celebrating the UNESCO World Heritage site "Caves of Aggtelek Karst and Slovak Karst". The site comprises 712 caves in Slovakia and Hungary. They represent a typical temperate-zone karstic system. The sediments and fossils in the caves show geological records of the subtropical and tropical climatic conditions from the Late Cretaceous and early Tertiary, as well as the Pleisp the stamtocene glaciations. The original nomination in 1995 listed the Domica, Gombasecká, Jasovská, Krásnohorská, and Ochtinská caves on the Slovakian side, with Dobšiná Ice Cave added as an extension in 2000. A modification of the site boundaries on the Hungarian side took place in 2008.
