transit camp
From Longman Dictionary of Contemporary Englishtransit campˈtransit ˌcamp noun [countable] PGa place where refugees stay before moving to somewhere more permanentExamples from the Corpustransit camp• While they waited, the Joint put them up at a transit camp just outside Vienna.• The decision, following a public inquiry in February, clears the way for a controversial gipsy transit camp.• While in the transit camp at Lowestoft he was offered a choice of hostels in Belfast, Leeds or London.