This is it; we’re going to the World’s famous Underground River! Kuya   Danny, our contact for our Puerto Princesa tours, advised us that  we’ll  be joining other groups for our 
Underground River Tour  since we are only  a group of four. Not an issue, it’s an opportunity  to make new friends  and as they say, the more, the merrier!
Early Birds
Pick  up time is 7:30am so we need to wake up early. And excited as we  are,  we were ready before the van had arrived with full stomach! Thanks  to 
Tres Pension’s free continental breakfast and to Joy, the very  accommodating staff, who had prepared our breakfast as early as 6:30am.
Our  van has arrived and we were picked up, just right on time. There  were a  total of 3 groups, with 11 individuals in the van plus our tour  guide  and a driver.
A Joy Ride
The 
Underground River  is located at Sabang, an approximate two hours  ride from Puerto  Princesa. It’s a bit long but thanks to our funny tour  guide, Doris,  and our efficient driver, Kuya Ruben, for making the long  drive fun and  enjoyable. Doris had shared a lot of information, history,  myths and  fun facts not only about the Underground River but also about  Palawan  as a whole.
The long drive gave us a scenic charm of  the province and made us  realized why Puerto Princesa is considered as a  “City in a Forest”.
Since it’s quite a long drive, we  made our fist stop to Jazz Souvenir  & Coffee Shop. Some had their  breakfast while we enjoyed the scenic  view of the Ulugan Bay, the Tres  Marias and Rita Island.
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| Can you spot the three little islands? It's the Tres Marias Island! | 
We also had a short stop, of course for photo op, in this picturesque “lion cave”.
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| The "Lion" Cave | 
An Inch Closer
After  a few hours of an enjoyable ride, we arrived in Sabang Port. The   weather is a bit unpredictable that day; it’s a bit gloomy actually. But   nevertheless, there were already a number of tourists in the area,   waiting for their turn to ride a boat going to the Underground River.
Since  we booked a tour, our tour guide was the one who processed our  permits  and she had just asked us to give her our ids and she called us  when  it was our turn. That’s the benefit of getting an 
Underground River  Tour rather than doing DIY tours; all is prepared and taking care of.
After  about 15 minutes, our permits we’re ready and it’s our turn for   another 20mins of boat ride going to the Underground River. It was a bit   rough ride but thanks to our skilled boatman, we never got wet or just   splashed by the water unlike what happened on our 
Half Day Honda Bay  tour, wherein we got very wet on our way to the island.
Familiar  spot, right? From our elementary textbooks, postcards and now  across  social sites, this is the most photographed spot in the  Underground  River area. And of course because we’re “in”, we pose and  pose and pose!
Monkeys & Lizards First
From  the above spot, we were asked to register and before going directly  to  the cave, our tour guide directed us first to the Monkey trail  area.   She had advised us to keep any plastic bags or food as Monkeys   tend to  get and steal things from visitors and that giving food to any  animals  in this area is illegal as they are firm in preserving not just  the  natural habitat of the animals but as well as their habit and  behavior.
 But  sadly, no Monkey showed up during our visit. However, there were   Monitor Lizards! There were a number of them in varying sizes. All are   freely in the ground, not in a cage or something.
The Trail to the Underground River
After  an encounter with the lizards, we proceeded to the trail going to  the  entrance of the cave. It’s a just a short walk and there were quite a   number of visitors already; all waiting to explore one of New 7 Wonders   of the Nature, the Underground River.
As far as I can  remember, our turn to enter the cave was number 39th.  Yes, it’s only  about 10am and the number of tourists already flocked in.  As we need to  wait for about an hour before our turn to get in the, we  just enjoyed  the beautiful scenery and of course, took many pictures as  we can.
The Longest Underground River Experience
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| Cave Entrance | 
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| The Underground River Explorer :) | 
 Alright,  this is it! We rode the paddle boat and we were a group of 9  with a  boatman/tour guide in one. The once seated in front holds the  spotlight  and directs it as to where the boatman is referring; usually  an  interesting formation of stalactites and stalagmites.
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| Inside the cave | 
 Upon  entering the cave, the boatman started his funny lines by greeting  us  “Good Evening” as it’s very dark inside. The smell is also unpleasant   due to thousands of bats living inside the cave. Known as the World’s   longest underground river, the Puerto Princesa Subterranean River   National Park is 8.2km long and it flows directly to the South China   Sea. However, visitors are only permitted to visit the first 1.5km of   the river for safety and health reasons.
Like any other  tour, the boatman/tour guide shared a lot of information  about the  Underground River, its history, how it was discovered, etc.  What’s  amusing is that they made some story out of the limestone’s  formation  for millions of years. To name a few, there’s a vegetable  garden with  interesting vegetable formation like a giant mushroom,  there’s a  cathedral, a candle, etc.
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| Last look at the Cave entrance | 
 For around 45minutes of  almost total darkness, I can’t help but realized  and be astonished of  this amazing natural wonder by our Creator. What  even made it more  interesting are the entertaining lines of the boatman;  I know they are  scripted but I recognized their effort to make the tour  entertaining as  possible. Just be careful when opening your mouth as  there are  thousands of bat inside the cave, you might taste a “holy  shit”.
A Great Way to End the Tour
What  a great way to end the tour than by having a buffet lunch at beach   front? The foods were delicious and the relaxing ocean breeze was very   relaxing.  
Since we finished the tour early, the group  had supposedly agreed to  proceed to Ugong Cave for spelunking and  zipline activity. Unluckily,  just as we arrived in the place, the heavy  rain started to pour so we  decided to go home instead.
On  our way to the city, our tour guide also asked us if we would want to   be dropped off at the new pasalubong and souvenir center. Granting that   we have limited time for our city tour on the next day, we grab the   chance and bought some pasalubongs and personalized Palawan souvenir   shirt before going back to Tres Pension.
The Verdict
The  Puerto Princesa Underground River is truly a wonder! It's one of a kind  and we're so blessed to have this in our country. The tour itself was  also fun, hassle-free and enriching experience; thanks to our tour guide  and driver. And with that, I would say that an 
Underground River Tour is a must when in Palawan.