text: Only 5 km ( 3 miles ) west of Ocho Rios , Dunn 's River Falls is a series of limestone cascades that carry the water of Dunn 's River almost to the sea .
  
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  Only 15 km ( 9 miles ) west of Ocho Rios , Dunn 's River Falls is a series of limestone cascades that carry the water of Dunn 's River almost to the sea .