<page_title> List of caves in Bulgaria </page_title> <section_title> Partial list of Bulgarian caves </section_title> <table> <cell> Duhlata <col_header> Name </col_header> </cell> <cell> 18,200 m <col_header> Length </col_header> </cell> <cell> Orlova Chuka <col_header> Name </col_header> </cell> <cell> 13,437 m <col_header> Length </col_header> </cell> </table>
The longest caves in Bulgaria are Duhlata (18,200 m) and Orlova Chuka (13,437 m).