This 1.64sq km (0.63sq mile) nature reserve is renowned for having one of the richest and most diverse ecosystems in the world. Besides hundreds of animal and insect species, it also contains more tree species than the whole of North America. Weekends are busy with walkers, nature lovers and mountain bikers, so come on a weekday if you prefer a quiet trek. There are four walking trails. A steep paved path takes you directly to the peak, but more interesting are the unpaved trails; route 3 (green) follows a winding forest path, past caves used by Japanese soldiers in World War II. Look out for long-tailed macaques, squirrrels and snakes, and listen for the incessant ‘chonk-chonk’ of the striped tit-babbler. Cyclists should wear protective gear as the biking trail is extremely rugged. The visitor centre has toilets and souvenirs, but no food.