International Union of Speleology

The Union Internationale de Spéléologie (UIS) is the international body for caving and speleology. Formed in 1965, its voting members consist of a delegate from each member country. This delegate represents the country's cavers and speleologists, rather than its national body(s). An elected Bureau runs the affairs of UIS between the 4-yearly General Assemblies held at the International Congresses. The actual speleological work of UIS is done by the members of its Commissions and Working Groups, which are open to everyone who is interested.
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