This article does not cite any sources. (January 2012) (Learn how and when to remove this template message)
Sub-Saharan Africa and Australia were not affected by the glaciation (although vast areas of those continents were then too dry for human habitation of any sort, even by the most specialised and well-adapted foragers), and the Americas and New Zealand had no humans at that time. Therefore, the shelters are located mainly in Eurasia. Several of them have been studied.