In addition, there is also the following article on Travelmagma.com with more information on the trip to the Cascadas del Rio Colorado :
Cascadas del Rio Colorado
The scenery is stunning, beautiful, nature in all its design. Be sure to make this visit with a hired guide, so you can understand and enjoy it more. The tour of Cascadas del Rio Colorado can be dangerous because of its heights and the fragility of the tracks. It is not recommended to explore the Cascadas during the rainy season. The tour has 3 options up to the third waterfall, until the fifth and even sixth. A guide is essential and a good guide makes all the difference. The skilled guides can help bring you to the best local places for diving and various other attractions. The complete tour lasts an average of 5 hours, but it is all worth it. Although most of the paths are clear with well- marked trails, there are portions of the trail that leads to a rocky river. In some places, the hike becomes more difficult and people with reduced mobility may suffer enough. Bring enough drinking water; wear warm clothes, and appropriate hiking shoes to enjoy the excursion.
You spend three hours to do trekking in the mountains, going up and down, looking for waterfalls and viewpoints. It crosses the river several times, stepping in the water, climbing up and down the mountains through the stones. It is for this reason why you must do it with a local guide, otherwise it is easy to get lost and even get hurt. It is a hard road, but for anyone who is in good physical condition and not afraid of heights, it is worth doing.