.IUCN.  

The International Union for Conservation of Nature is an international organisation working in the field of nature conservation and sustainable use of natural resources. It is involved in data gathering and analysis, research, field projects, advocacy, and education. IUCN’s mission is to “influence, encourage and assist societies throughout the world to conserve nature and to ensure that any use of natural resources is equitable and ecologically sustainable”

Guidelines for geoconservation in protected and conserved areas can be found here.