Book a night-spotting drive into the Cuc Phuong primary forest
Spotlights, small groups, loris
It must be booked with the park rather than a Ninh Binh hotel, and it requires you to be sleeping inside the park, which rules out the standard Tam Coc base. Groups are small and a torch is provided, but bring your own; red filters and quiet shoes make the difference. Not run in heavy rain or under storm warnings.