The sanctuary is great in that it protects the hab...

The sanctuary is great in that it protects the habitat of the black howler monkeys and other wildlife here, as well as promotes conservation of the riverbank. Our experience was poor - our guide was drunk, attracted monkeys by hand by feeding them some special leaves (he said coca leaves but they seemed big and green) and tried to get them worked up to howl. We were saddened, it seemed to us that conservation and low impact would be the focus. The guide kept digging for tips and trying to tell us we saw what we wanted. We finally just had to say: no, we didn't appreciate him interfering with the animals and that the tour was not good for us.