Lambir Hills National Park contains one of the world’s most complex and diverse forest ecosystems. In a total area of nearly 17,180 acres (6,950 hectares), it is cited as having some of the greatest plant biodiversity on the planet. In addition, plentiful bird species plus flying squirrels, wild pigs, gibbons, monkeys, barking deer, and untold insects contribute to Lambir's rich kaleidoscope. This half-day trip from Miri includes a guided hike and waterfall swim.