Bastudalen Nature Reserve () is a nature reserve in Jämtland County in Sweden.
The nature reserve consists of the mountain peak Drommen and the Dromskåran valley. Dromskåran is a deep, broad and circa long canyon, formed by melting water during the end of the last Ice age. The area also contains other geological remnants from the Quaternary period. The nature reserve is part of the EU-wide Natura 2000-network.
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