Áísínai'pi or Writing-on-Stone is a landscape of rock art sites in southern Alberta that contains the largest concentration of images in the Great Plains. Thousands of pictographs are scattered across more than 150 sites. Most are located in Writing-on-Stone / Áísínai'pi Provincial Park. This rock landscape is located on a site considered sacred on the ancestral territory of the Niitsítapi (Blackfoot).
https://whc.unesco.org/en/list/1597/
https://www.albertaparks.ca/parks/south/writing-on-stone-pp/

This status recognizes places or areas as world heritage sites, which may be natural, cultural or mixed. The Convention Concerning the Protection of the World Heritage defines a cultural site as: "works of man or the combined works of man and nature, as well as areas including archaeological sites which are of outstanding universal value from the historical, aesthetic, ethnological or anthropological point of view". The convention defines a natural site as: "of outstanding universal value from the point of view of science, conservation of natural beauty."
Nomination: Places eligible for this status must already be recognized by the country for its outstanding heritage character. In Canada, the place must already be recognized at the provincial and then federal level to apply. One of the first steps is to be selected in the tentative list of potential heritage sites as is the case for the Stein Valley in British Columbia. For details on the nomination process, follow this link.
Duration: Permanent
Useful links:
Convention concerning the protection of the world cultural and natural heritage
World Heritage List Nominations
Timeline for the acquisition of the status by Pimachiowin Aki

