Vestfoldraet

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Vestfoldraet (short form: Raet) is a large, visible but mostly covered ground moraine formed during the last Ice Age, which stretches through most of Vestfold county in Norway in a south-west to north-east direction. In many places, it forms a natural boundary between the densely populated, agricultural and coastal areas of the county, and the more sparsely populated and forested inland areas.

The short form is also occasionally used to describe a similar moraine in the county of Østfold. Arguably, the two moraines is a single formation separated by the Oslofjorden.