Is the Underground River worth it?

Is the Puerto Princesa Underground River worth it?

Yes. It is a world-class natural site you can visit without any caving skills, sitting in a boat with a hard hat and an audio guide.

UNESCO describes the river cruise as unequalled by any other similar experience elsewhere in the world, because the cave is both accessible and navigable for the general public. Three reasons it pays back the long day:

• The cave itself. Speleothems and chambers as much as 120 m wide and 60 m high, per UNESCO, lit one formation at a time by the boatman's lamp.
• The setting. The lagoon under the cliffs, the macaques and monitor lizards on the beach, the boat along the coast from Sabang. It is a whole mountain-to-sea ecosystem, protected end to end.
• The calm. A limit of 900 visitors a day, quiet on the boats, and the commentary in your ear.

Adrian, on the river and firefly tour: "Whole experience was great, it deserves it's UNESCO recognition. Lovely location, well managed attraction." (Nov 2026)

Sources: UNESCO World Heritage Centre, Puerto-Princesa Subterranean River National Park; the park, notice to the public; GetYourGuide listing 347081.

Why is the Puerto Princesa Underground River famous?

Because an 8.2 km river runs under the St. Paul Mountain Range straight into the sea, its lower half tidal, inside a park with a full mountain-to-sea ecosystem.

The park collects more titles than almost any site in the Philippines:

The park calls it reputed to be the longest navigable underground river in the world, and the City Government says it was the first national park in the country devolved to and managed by a local government. UNESCO's own summary singles out the river's tidal lower half as a significant natural phenomenon.

Sources: Puerto Princesa Subterranean River National Park, significance, history and world heritage pages; UNESCO World Heritage Centre; City Government of Puerto Princesa; Wikipedia, Puerto Princesa Subterranean River National Park.

What do you see inside the Underground River?

Huge chambers, stalactites and flowstone in the lamp's beam, thousands of bats and swiftlets overhead, and rock formations the boatmen have nicknamed over the years.

The tour starts at the lagoon, where the paddle boats slide from daylight into the dark mouth of the cave. Then, in order of what most people notice:

• The scale. UNESCO notes chambers as much as 120 m wide and 60 m high. The ceilings disappear above the lamp.
• The formations. An Inquirer feature described boatmen pointing out shapes nicknamed the Cathedral, the Giant Candle and the Holy Family, and a stretch of vegetable and meat shapes they call the market.
• The wildlife. Thousands of bats and swiftlets live in the cave, with 8 species of bats per the park. Bats and swallows are usually the only animals you see, says the listing for the tour from the city proper.
• The science. The park counts 11 minerals in the cave, among them the rare serrabrancaite, a manganese phosphate formed from bat guano. The City Government also mentions a Miocene fossil of a sea cow, about 20 million years old.

James, on the zipline and mangrove day: "Floating through the massive cave system felt like stepping into another world. The rock formations, towering caverns, and peaceful atmosphere made it one of the most incredible natural wonders we've ever experienced." (May 2026)

Sources: UNESCO World Heritage Centre; the park, geology and biodiversity pages; City Government of Puerto Princesa; Philippine Daily Inquirer, 21 April 2013; GetYourGuide listings 607269 and 343766.

The river by day with lunch in Sabang, a rest at your hotel, then the fireflies in the mangroves after dark, with dinner.

★ 4.5 · 10 hours · from $81

Explore the river and firefly tour → Tour details

How long is the Underground River, and how old is it?

About 8.2 km long, navigable for about 4.3 km, through a limestone karst estimated at 16 to 20 million years old.

The river starts as the Cabayugan River on the slopes of Mount Bloomfield, irrigates rice fields, then disappears beneath Mount St. Paul and flows through the limestone to the sea. The numbers, from the park:

• The river: about 8.2 km underground, navigable up to 4.3 km. The visitor tour covers the first part by paddle boat.
• The karst: about 11 km long and 3 to 5 km wide, covering some 35 square km.
• The peaks: Cleopatra's Needle at about 1,500 m, Mount St. Paul at 1,028 m and Mount Bloomfield at 870 m.
• The age: about 16 to 20 million years for the limestone.

Beyond the tour, the cave keeps going. The City Government's page mentions a 2010 survey that found a second level with small waterfalls, a dome high above the river and more channels, and notes that the deeper parts are almost impossible to explore for lack of oxygen.

Sources: The park, physical features and geology; City Government of Puerto Princesa, Underground River.

Is the Puerto Princesa Underground River one of the 7 Wonders?

Yes. It was named one of the New 7 Wonders of Nature on 11 November 2011, and the result was confirmed on 28 January 2012.

The park says the Underground River was officially recognized as one of the New 7 Wonders of Nature on 11 November 2011, alongside six other sites, among them the Amazon, Iguazu Falls, Jeju Island, Komodo and Table Mountain. The City Government adds that the selection was officially confirmed on 28 January 2012.

It was a national campaign. President Benigno S. Aquino III signed Proclamation No. 182 on 3 June 2011, declaring a national and international campaign for the river, and Filipinos at home and abroad voted for it. The New 7 Wonders of Nature are a different list from the ancient Seven Wonders of the World, which is why you see both names online.

Fiona, on the river and firefly tour: "Such an experience seeing one of the 7 wonders of nature." (Feb 2026)

Sources: The park, New 7 Wonders of Nature and history pages; City Government of Puerto Princesa, Underground River; GetYourGuide listing 347081.

How long is the tour inside the Underground River?

About 45 minutes to an hour on the paddle boat. The whole day from the city takes 6 to 10 hours, depending on what your tour adds.

The park puts the paddle boat tour at about 1 hour; the listings say about 45 minutes. The rest of the day, on the full-day trip with lunch for example, runs like this per its itinerary:

• The van north, about 1.5 hours, with a stop at the Buenavista viewpoint over Ulugan Bay.
• Sabang Wharf, about 30 minutes while the guide checks you in for the boats.
• The pump boat, about 20 minutes along the coast, then a short walk to the lagoon.
• The cave, about 45 minutes in the paddle boat.
• Lunch in Sabang, about 1.5 hours, with the zipline or the mangrove paddle boat as options.

That is why the day is worth more when it adds something. The zipline day adds an 800 m zipline and the mangroves; the firefly tour adds an evening on the water. Jeffrey, on the zipline and mangrove day: "The UNESCO River Tour was stunning and well organized. The audio programming is an excellent way to commmunicate the history and importance of this cave system." (Mar 2026)

Sources: The park, points of interest; GetYourGuide listings 180785 and 343766.

How many days do you need in Puerto Princesa?

Plan 2 to 3 days: one full day for the Underground River, one for Honda Bay or the city, and a spare day in the rainy season.

The river takes a whole day, so build the trip around it. A simple plan:

Short on time? The river works as a single day from the city, and several tours pick up within 5 km of the airport. The private tour suits cruise passengers and short stays, per its listing. El Nido is a separate trip: Wikipedia puts it 269 km north-east of Puerto Princesa, at the northern tip of mainland Palawan.

Our best-time guide sets out the dry and rainy months.

Sources: Wikipedia, Honda Bay, Puerto Princesa and El Nido; GetYourGuide listings 347081 and 347076.

Which Underground River tour makes the day most worth it?

The one that adds what you want: lunch by the sea, the zipline and mangroves, the fees paid, a private van, or the fireflies after dark. The cave is the same on all of them.

Every tour takes the same park paddle boat into the cave and arranges the permit. What changes is the rest of the day:

Prices are GetYourGuide from-prices in USD, per person except the private tour, which is per group of up to 4. Every tour here cancels free up to 24 hours before. The environmental fee is paid in cash at the wharf on the tours that leave it out.

Our cost guide breaks down every fee, and the packing guide covers the kit for the boats.

Sources: GetYourGuide listings 180785, 343766, 607269, 541582, 533011, 627422, 813916, 347076 and 347081.

The fullest day in Sabang: the cave with an audio guide, lunch on the beach, an 800 m zipline and the mangrove paddle boat.

★ 4.6 · 10 hours · from $72

Explore the zipline and mangrove day → Tour details

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