Meet on arrival at Mulu Airport and transfer to Mulu National Park Headquarter.  Afternoon, trek 3KM through Mulu’s amazing tropical rainforests to discover Lang Cave and its beautiful formation. Then, walk through the World’s largest cave entrance of the Deer Cave. If the weather is fine, proceed to the open-air observatory for an opportunity to witness the phenomenal exodus of millions of bats out of the caves (subject to fine weather).  Each evening the bats gather at the cave entrance in large ring-shaped formations, circling higher and higher up the cliff face before moving out across the rainforest in spiralling ribbons. Twelve species of bats have been recorded within Deer Cave, including the colony of Wrinkled-Lipped Bats estimated to number between 2.5 and 3.5 million individuals.  Return to the park HQ. 

Dinner at Mulu Park Canteen before retiring for the night. (D)

After breakfast, take a long boat and cruise along the winding rivers to a tribal Penan settlement. Brief stop to learn about this unique community before continuing your journey upriver to the enchanting Wind Cave and Clearwater Cave. The Wind Cave is famous for its naturally sculpted column and pillars. Discover the Clearwater Cave where you will find that the river that roars beneath your feet has travelled its subterranean route for over 170km. Take a refreshing swim in the crystal-clear waters outside the cave where the river emerges from the cliff face. Enjoy your picnic lunch amidst the rainforest. Return to park HQ. Dinner at Park Canteen and overnight

Free at leisure until transfer to Mulu airport for departure flight