Hearse model. It is available in both a cut version to print without supports (you will need glue in this case) and a full version to print with supports or in resin.
(The tests and photos have been made with the cut versions, and an FDM printer)
This piece was part of a kickstarter project; there you can find more information and (maybe) answers:
https://www.kickstarter.com/projects/daniamengual/the-caravan-stl-files?...
And if you are looking for more wagon models, maybe these might interest you:
Western Wagon
Stagecoach
Prisoners Wagon
Caravan Dwelling V1
Caravan Dwelling V2
Treasure Wagon
