Hiked to the reina waterfall and Nambilla waterfall on separate days. Bring waterproofs and good footwear...we were caught in a terrible downpour and had to return. you need to take the cable car to cross the ravine ($5 return). Taxis cost $8 to and from mindo, found this quite expensive if alone, but if you can share the costs between a group if it's a van. There is also a chiva/ bus that provides transport to and from mindo.
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