Answers

2016-04-07T19:35:29+05:30
Dun is a valley between the Himalayan foothills and the Siwalik whereas a pass is a gap, or break, in high, rugged terrain such as a mountain ridge.
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2016-04-07T20:54:14+05:30
Dun is a valley between the Himalayan foothills and the Siwalik
Pass is a gap, or break, in high, rugged terrain such as a mountain ridge. 
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