We may help you to take a tour over the river to watch proboscis monkeys and fireflies. The tour includes: taxi transportation to a jetty on the river (about 1.5-2 hours trip, much better and cheaper if you have your own/rented car), boat trip along the river to find and watch monkeys, dinner and refreshments, transfer to another place, second boat trip to see fireflies, return back to the resort. We went there ourselves to check and yes, we saw monkeys! 🙂 See some pictures below. Check our price list for current prices.