Mulu Caves
Listed under Caves & Caving in Malaysia.
More than 300 kilometres worth of passages make up the Mulu Caves complex which also includes one of the world’s largest cavern passages, Deer Cave (which can fit London‘s St Pauls Cathedral inside it five times over.).
The Mulu Caves began to form over five million years ago when running water began to forge a path between the limestone and sandstone of the mountain’s interior and is continuing to grow in the same way, slowly developing as rivers carve their way through the underground cathedrals and redistribute the limestone from the walls and floors to the tips of the stalactites.
Millions of bats live in the complex and in the evenings they depart on mass in a cloud of flapping wings, to feed.
To enter the cave system you can either walk along a long wooden bridge walkway just off the ground through an ancient forest and limestone flats or go on a longboat trip to the lower caves.
Most of the system is accessible only to experienced cavers, but four caves have been set up as show caves with good lighting and easy access.
Written by 
Mike Lyvers.
Other expert and press reviews
“World's Largest...”
Mulu National Park is one of the most spectacular cave regions on earth. Deer Cave (accessible to the general public) has the world's largest cave passage, and Good Luck Cave (cavers only) has the world's largest underground chamber, called Sarawak Cham… Read more...
Written by Mike Lyvers.
Comments, reviews and questions by other travellers
Getting to Mulu cave, cost and expectations
HI,I am planning to take a group of 5 people to visit Mulu cave. Can anyone let me know if we can do just a one day trip, where and how we can get this trip booked and how much would it cost for each or group as a whole. Lastly what do one need to bring for this trip? Thanks if you can help with informations regarding my concerns.
Who's been here
Similar Experiences
Cave Diving under the Nullarbor Plain
Lying 90m under the sun scorched red dust of the Nullarbor lie some of the worlds largest underground cave systems, spreading f…
Plura River Cave Diving
The Plura River emerges from a large cave entrance about 30km to the north east of the town of Mo i Rana, Norway. Diving this s…
Niah Caves
Sarawak's Niah Caves are among the most important archaeological sites in Southeast Asia. A 3 km plankwalk leads through beauti…
Nearby Experiences
Wind Cave to Clearwater Cave
Mulu has arguably the best caves in the world. Situated in the Gunung Mulu National Park, these caves, described in print as Th…
Mulu National Park
Mulu National Park is a UNESCO World Heritage site, and quite rightly so, for it is home to the superlatives of Borneo’s wild, …
Longhouse Culture of the Iban people in Borneo
Loagan Tasan is an Iban longhouse near to Marudi on the Baram River in Sarawak. In June the Ulu (upriver) tribes or Dayaks all …
Hi, I just came back from Mulu 2 days ago...You can stay in the National Park (Rm180 per room - can fit in 4 person) or dorm which is much cheaper.
Can you come for a day trip? I don't think so, flight from Miri its either late morning or afternoon and last flight out is before 5pm. So you need to stay over night.