Not Vardos but sheep camps used out west with the sheep out on the range. They where first used in the 1870s and was little more than a covered wagon but out fitted a bit better. Then developed over the years into an enclosed space for the herder to live and work from. Vardos seem to balloon out from the sides but Sheep camps go straight up and then arch over. I have seen a discussion about not calling them Sheep Wagons or Sheep Camp Wagons. I have never herd anyone call them anything but Sheep Camps.
Here is a link
Sheep Campsugh, those philistines call them sheep wagons. You don't haul sheep in them. Only sheep that ever see the inside of one are bum lambs that need some doctoring or a warm place for a day or 2. But that is not often as lambing is done at headquarters and few herders are still living in the camps. There are bunkhouses for them at headquarters. And a there is a kitchen and dining room for eating at most big outfits. Back in the 70s I was hauling hay to a sheep outfit and ate with the men a few times. If I got my timing just right.
Randy