Most visitors experience Cat Ba National Park from a bike seat or a boat deck. This trekking day takes you on foot through the ancient Kim Giao forest and up to Ngu Lam Peak (approx. 225m) — a 360° viewpoint over Lan Ha Bay's limestone islands. Along quieter trails deeper in the park, your CBWD guide — trained in the park's ecology — points out medicinal plants, bird calls, and signs of the endemic Cat Ba langur, found nowhere else on Earth. A full day on foot for travelers who want to engage with the forest, not just look at it.