Solivagant just sent me a bit more on this, and it opens a can of worms.
The Bantu and Austronesian ones are actually Ethno Linguistic Cultural groupings.

We can group them with a broader spectrum of cultural groupings of course, but we need to think it through.

You could create a "Language and literature" category, where you group all the linguistic and literary connections. This would include the "ethno linguistic cultural groupings", the language connectons (e.g. language isolate, writing systems, ...) and all the literary connections that are now in the "Literature and film" category.

The "Literature and film" category could then become the "Film, tv and music" category.

I think that would make two more homogene categories?

I think a category with ethnicity as a denominator would run into all kinds of trouble... That's why I went with the very general "Human populations".

To conclude the Viking Age Ring Fortresses:

Connection: Vernacular architecture

Viking Age Ring Fortresses – "From a typological point of view, the nominated property may be categorised under 'archaeological heritage', 'military properties' and even, when considering the important evidence of a traditional Nordic building typology symmetrically-ordered within the fortresses, 'vernacular architecture'." (Nomination file, p. 194)

Already existing, but changing/adding rationale:

Connection: Extended from original TWHS

Viking Age Ring Fortresses – The Trelleborg fortresses - 2010-2018 – "In January 2009, Viking-Age Ring Fortresses of Aggersborg, Fyrkat and Trelleborg were included on Denmark's UNESCO Tentative List of candidate World Heritage sites. Nonnebakken and Borgring were not part of the application in 2009 for different reasons: Borgring was not identified as a member of the group of Viking-Age Ring Fortresses until 2014 and Nonnebakken was in 2009 thought to be almost destroyed. Later excavations at both sites have however, changed the situation. Consideration of an application for the inclusion of Viking-Age Ring Fortresses on UNESCO´s World Heritage List therefore necessitates all five fortresses – the group or system – to be nominated." (Nomination file, p. 143)

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On a related tangent: any luck with retrieving the rationales of the connections that are not showing up after the site update? For the Viking Age Ring Fortresses, the newly added connections show up with their rationales, but those that were already added, do not show up.

No, not yet, Nan is still analyzing it.
Adding new connections and connected sites is no problem, but I refrain from editing existing ones at the moment, as the issue also appears in my edit screen (so I am afraid I will save it as a blank)

Already inscribed still on T List
Masjed-e Jâme'
Also under "Persian Mosque"

Location for a classic movie

The Seed of the Sacred Fig (2024) (2025 Oscar Awards Best International Feature Film Nominee, 2025 BAFTA Best Film Not in the English Language Nominee, 2024 Cannes Palme d'Or Nominee, Jury Special Prize, Fipresci Award, Prize of the Ecumenical Jury, François Chalais Award Winner, 2025 Golden Globe Best Motion Picture - Non-English Language Nominee)

https://www.imdb.com/title/tt32178949/awards/?ref_=tt_awd

This political drama is set around the Mahsa Amini protests in Iran. After it was picked for the main competition at the 2024 Cannes Film Festival, the director, Mohammad Rasoulof, was sentenced by Iran's government to eight years in prison, whipping (flogging), and a fine. He then fled to a safe house in Germany.
The last 30 minutes of the film were shot in the Kharanaq ruins near Yazd. The Kharanaq castle is the main visual highlight, and the nearby Kharanaq Caravanserai, which is part of UNESCO's Persian Caravanserais World Heritage listing, appears in several scenes.

Location for a classic movie

In this connection, some whs does not match with a film. I believe we should fix it. I am starting...

Iguacu - Indiana Jones and the Kingdom of the Crystal Skull - https://youtu.be/Zeipl6JA53M
Ancient Nara - Rashomon (needs verification)
Bam - Il deserto dei tartari (needs verification)
Brasilia- The Edge of Democracy, Aquarius (needs verification)
....

Connection: Horse Burials

Birka and Hovgarden – "There are six Viking-Age cemeteries surrounding Birka, (...) one (...) contained the remains of a Viking woman buried with weapons and two horses." (Viking Age Ring Fortresses Nomination file, p. 203)

Connection: Viking settlements

Curonian Spit – "The spit records 5,000 years of occupation, including the Viking-Age when there was a pagan trading settlement called Kaup (likely starting point of the amber road to the south). This was founded in the early 9th century CE as a colony of Birka (archaeology evidences Swedish Vikings, not Danish)." (Viking Age Ring Fortresses Nomination file, p. 207)

A positive update on the "Case of the Disappearing Rationales":
The cause has been found and a solution determined. It won't be long now before we can again enjoy all rationales.

Hurray! Many thanks and a huge kudos to all the people who are keeping this site running and up to date!

New connection proposal for the WHS on Other Lists Category:

Connection: Viking Cultural Route
The Viking Cultural Route is a cultural route of the Council of Europe. This connection features WHS that are part of the Viking Cultural Route. (Link)

Birka and Hovgarden - Link

Jelling - Link

L'Anse aux Meadows - Link

Novgorod - Link

Thingvellir - Link

Viking Age Ring Fortresses – Fyrkat, Trelleborg (Link)

Yaroslavl - Link

Dholavira is still free as of July 2025. Just a small update))

New connection: Chalk
WHS with a significant presence of chalk, a soft, white, porous, sedimentary carbonate rock.

The Neolithic Flint Mines of Spiennes occupy two chalk plateaux (OUV statement)
Plitvice: waters flowing over the limestone and chalk ...the presence of carbonate rocks, including both limestone and chalk from the Mesozoic Era
Mons Klint: the property includes chalk cliffs (OUV statement)
Champagne: on cool, chalky land, the Champagne Hillsides, Houses and Cellars form a very specific agro-industrial landscape (OUV statement)
Maresha–Bet Guvrin is an eminent example of traditional use of chalk subsurface strata (OUV statement)
Val d'Orcia: The landscape's distinctive aesthetics, flat chalk plains out of which rise almost conical hills with fortified settlements on top (OUV statement)
Stonehenge and Avebury: Silbury Hill is the largest prehistoric mound in Europe. Built around 2400 BC, it stands 39.5 m high and comprises half a million tonnes of chalk. (OUV statement)

K'gari (formerly Fraser Island): Captain James Cook

"The first recorded Briton to sight K'gari was James Cook who passed along the coast of the island between 18 and 20 May 1770."
https://en.wikipedia.org/wiki/K%27gari