//
A pleasant ride through paddy fields and village life to these caves with pre-Angkorian (Funan) shrines and "lost worlds". Just after the rhino statue turn left (there is a sign to Phnom Chhnork Resort), cross the railway into a village. Straight ahead is Phnom Sera with some interesting caves and a quarry which feeds the local gravel industry. Follow the road 90 degrees left and 2 km or so to Wat Ang Sdok, pay the monks and walk across to the mountain. Take a torch.
There are lots of durian farms on the way to Teuk Chhou Rapids. It may be hard to communicate to a tuk-tuk driver that this is what you want to see, but a tourist office / travel agent can help you arrange it. There don't seem to be organized guided tours like for the pepper farms, but you can go to a plantation and ask for permission to look around – before you leave, buy some fruit as a thank-you. Even when durian is out of season it's mildly interesting; in January you can see the unripe fruit starting to grow.
Stand Up paddleboarding, SUP lessons and tours. Kayak rentals, swimming and cafe.