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 .
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 nearly to the sea .