In 1949, the international speleological community, then mostly Europeans, agreed in a meeting in
Valence-sur-Rhone, France, to hold international speleological congresses beginning in
Paris in 1953. These efforts continued during the
Cold War. At the 4th International Congress of Speleology in
Postojna/
Ljubljana in 1965, a group of speleologists proposed to establish an association that would bring together scientists and cavers on both sides of the
Iron Curtain and coordinate their activities. At the closing ceremony of this congress, the UIS was finally launched. However, the confirmation of its organization and statutes did not take place until the following congress in
Stuttgart in 1969.
International Congresses of Speleology Meetings have been held in the following years: == Structure ==