The IUCN-UNESCO Sacred Natural Sites (SNS) guidelines aim to help conservation professionals and support custodians of sacred sites and their communities to ensure the long-term survival of such valuable sites. The Sacred Natural Sites Initiative (SNSI), as part of the Specialist Group on Cultural and Spiritual Values (CSVPA), the World Commission on Protected Areas, IUCN, and UNESCO are calling for your contribution to review and test the IUCN- UNESCO Sacred Natural Sites Guidelines for Protected Area Managers. This document explains what you can do and why your help is important.