Decorated cave of Pont d'Arc has a replica ad thus doesn't meet the connection criteria anymore,
It does seem rather strange that our rules for this Connection state "WHS that are COMPLETELY closed to the general public, and where there are no replicas available. Sites with only parts closed off are not admittable.
". I wonder why we did that? Presumably to avoid duplicating the "Replica Available" Connection?
If the real thing is "closed" then it is "closed" even if a replica is available. Vezere Valley wouldn't count of course as, although Lascaux is closed, other locations are open.
A better "definition" might be "WHS where a major element providing the OUV is closed to the general public". This would create a few more for the Connection (including Vezere and Kazanlak) - but the "purpose" isn't to be restrictive but to add information about the sites.