Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Ha Long Bay' has mentioned 'Region' in the following places:
Occurrence Sentence Text Source
end of the Devonian Period Due to tectonic activity, the Ha Long area and the entire north-east region were raised from the depths 340,000,000xe2x80x93240,000,000 BC later Carboniferous and Permian periods The formation of the limestone layer more than 1,000 m thick.