Pacaya River marks my favorite outing of this expedition. Here we find massive punga trees emerging from an extensive wetland, with large colonies of horned screamers and howling monkeys. We chose to extend our morning excursion to a four-hour tour, which included breakfast in the skiffs and a dip in the isolated Yanayacu Lagoon, surrounded by vibrant pink river dolphins. To have this remote wilderness all to ourselves made the day even more unique, and well worth the long journey from Nauta.