The founder of the bath, Lajos Szentléleki Zsóry, chief administrative officer of Mezőkövesd and a Member of Parliament, conducted test drills to find oil on his estate in 1938. Instead of oil, a 100-foot geyser of hot water sprang up when the drill bit hit a Triassic water reservoir some 2500 feet below ground on February 25, 1939. Its healing properties make the water a valuable natural asset for Hungary and the whole of Europe.