Several people reviewing the Sun Tour have referred to a friendly young guide named Carlos. We were hiking to the falls from the parking lot near town ($2 parking, or free on the road), when he insisted on showing us the safe way. We thought he was going to show us the trailhead, but he kept going on down the trail with us. When we arrived at the lower falls, which are only a few hundred feet down the trail, he took us on the trail marked with yellow dots. This is a free trail on public land, but it is sketchy in places, especially when it is wet, because the climb goes up and down muddy banks with roots and old ropes (and considerable exposure). Fine for the young and adventurous, but for $2 you can take a trail maintained by Sun tours which is an improved and safe trail. It turns off to the left shortly before the lower falls We didn't know it at the time, because Carlos pointed us down a different trail to the right. At the lower falls, he insisted that another family join our group. To make a long story short, this bossy young man insisted at the end of the trip that the cost of his guiding service is $35 per person. He would take less (only $25) because we weren't going through a hotel. If you are going to spend that kind of money, I recommend going with the zip line tour, and the paid guides will then take you on the improved trail to the upper falls. We wouldn't go with Carlos again. We did end up paying him (he demanded $40 per family), but in hind site, we were scammed by an insistent young "salesman." Setting the "guide" services to the side, the upper falls were great.