As you have probably heard, brown bears have been sighted at several locations in north-east Hungary this week. In recent years, this has happened more and more regularly. However, just because there is a bear in town, this does not mean you need to postpone your visit to Aggtelek National Park. Encounters with bears are extremely rare. But in any case, you should keep the following rules in mind:
http://regi.anp.hu/en/medvehelyzet