4 Nights Five days adventure $645.00 per person from Sierpe

Venture deep into the heart of Corcovado National Park to explore and discover the vast, pristine rainforest wilderness of Costa Ricas remote Osa Peninsula, identified by National Geographic as One of the most biologically intense places on the planet. Based from the ecolodge Marenco Lodge located inside of the Punta Rio Claro National Wildlife Refuge, we hike, Canoe, snorkel, swim, and explore miles of wilderness trails and waterways among the rainforests, rivers, waterfalls and pristine tropical beaches of the Osa. Everywhere colorful scarlet macaws fly overhead and monkeys cavort in the forest canopy.

We spot spectacular tropical bird species and are always on the lookout for tapir, anteaters, coatimundi, peccary herds and other wildlife. We travel by boat along the wilderness coastline to reach the Sirena Ranger Station where jungle cats including puma and jaguar roam, and then either hike or fly out of this jungle wilderness. Local research biologists share firsthand the Yaguara Wild Cats Conservation Project supported by proceeds from your trip to protect the neotropical felines of the Osa. We engage local people who share their stories about life in the wilds of Costa Rica. A great adventure for teens and young adults!


Day 1: Arrive in Sierpe, the boat leaves from LAs Vegas restaurant at 11:30 am.  

Meals: Lunch, Dinner

  Punta Marenco Lodge

Punta Marenco Lodge nests atop a high bluff overlooking the Pacific Ocean infront of Caño Island, in Costa Rica's isolated Drake Bay. The resort is spread over a hill that blend seamlessly into the surrounding tropical rain forest, attracting a variety of birds and wildlife.

Day 2: Wildlife encounter in Corcovado National Park & Boat trip to Sirena.La Sirena Ranger Station: Intrepid hikers, wildlife enthusiasts, and photographers willing to rough it for a night at the La Sirena Ranger Station can ride the boat farther down the coast and spend the full day and overnight exploring the multitude of trails there when viewing is best in the late afternoon and early morning.

This is one of the best places to see wildlife in Costa Rica. Dine with your guide, park staff, and other adventurous travelers in the park kitchen, linger on the covered deck in the evening under the stars, then retire for the night in screened rooms with bunk beds (2-4 persons per room). Overnight at La Sirena Ranger Station.
Meals: Breakfast, Lunch, Dinner
Days 3: Early morning walk alone the trails of Sirena,  Afternoon return from Sirena.

Meals: Breakfast, Lunch, Dinner
Lodging  Punta Marenco Lodge
Day 4 : Boat ride to Caño IslandEnjoy a delicious local breakfast before departing on a 45-minute boat ride to Caño Island. Keep an eye out for whales, dolphins, tuna, marlin, manta rays, sea turtles, sailfish and more are drawn here year-round by these rich protected waters. Pack your sunscreen and underwater camera for a snorkeling adventure where starfish, octopus, conch, and moray eels can be found traveling through the underwater rock and coral formations.

This excursion is perfect for first-time and experienced snorkelers alike. Take a break from snorkeling to wander up island trails to indigenous burial sites. Enjoy a picnic lunch with time for a swim or quick siesta on the beach before heading back to the lodge. Overnight at Punta Marenco Lodge

 Meals: Breakfast, Lunch, Dinner

Days 5:  After breakfast return to Sierpe.

Meals: Breakfast


Sirena Ranger Station is the headquarters of Corcovado National Park. It has extensive facilities for the support of academic research, park improvement and protection activities, and for camping, overnight lodging and meals preparation.  It is served by both charter air and boat access.  It is connected to all the other ranger stations by well maintained trails.  There are also a number of wildlife trails that are maintained in the Sirena area that provide a variety of options of day excursions for visitors spending the night at Sirena.  It has an extensive support staff and shifting populations of resident and visiting academic researchers.  Sirena Ranger Station is located within the Corcovado Basin and boasts an unparalleled abundance of wildlife of all types.  Unquestionably, Sirena Ranger Station is the best destination for maximizing wildlife viewing in Corcovado, and indeed in Costa Rica.  Below is a description of the facilities to provide a full appreciation of what you may expect (and not expect) and what to bring to ensure that your stay is comfortable and enjoyable should you decide to embark on this overnight adventure.

Dorm Lodging. Sirena is the only ranger station that offers overnight lodging in dorm style accommodations for up to 20 dormitory guests. Each bunkroom has two bunk beds plus an additional single bed. Each two to three rooms shares a common restroom which includes a very rustic shower, sink, and toilet. Groups of 4 or more are berthed together in individual rooms and are not expected to share rooms with other groups. Single or double passengers may get a private room if space permits, but will otherwise need to share a room with other visitors. The bunk rooms are spartan, containing only bunk beds and mattresses.

Unlike conditions at  other ecolodges in the Osa Peninsula, when you are at Sirena Ranger Station you are in the wet, lowland jungle where mosquitoes are prevalent especially in the morning and evening so repellant is essential. Some rooms have mosquito nets for individual beds, but not all do, and there is no way to ensure in advance that you will get one with mosquito netting. However, all rooms are screened, though the screen size is not small enough to exclude no see-ums, which are only problematic when they swarm at certain times of the month and day based on humidity (more problematic from May-November).

The dorm lodging does not include sheets or towels, so we provide a towel and linen sleeping liner to ensure your comfort. Although rooms are screened in but you may want to bring a personal mosquito net if concerned about mosquitoes, and a small back-pack pillow or stuff sack you can fill with clothes for a make-shirt pillow. Since insect repellant is highly recommended for night hikes and some places during the day, visitors may opt to forego the mosquito net and rely exclusively on bug dope. The dorm capacity at Sirena Ranger Station is 20 individual beds divided among five rooms. Preference is always given to academic and governmental researchers and to MINAE employees and volunteers during park initiatives over visiting guests, so often dorm lodging is not available. To ensure availability it is always necessary to reserve in advance, and since reservations are not accepted more than 30 days prior to anticipated arrival, it is best to make reservations requests exactly thirty days prior to your expected arrival.

Camping Area. Camping is possible only at the ranger stations at the entrances and at the central ranger station. Sirena station is a series adjoining structures connected by covered walkway. A covered platform next to a kitchen area and restroom provides needed shelter for pitching free standing tents and mosquito nets. As the platform is covered, you do not need to bring a fly if you are bringing a tent. Showers are available.

Hot Meals. Sirena Ranger Station has a fully equipped kitchen and staff that is responsible for the preparation of three meals per day for the MINAE employees stationed at the park, visiting researchers, and the visiting public. However, the kitchen has a capacity of around 30 persons, so meal service at Sirena is first come, first served. Beyond employees, meal priorities are extended first to researchers, then to dorm lodgers, and finally to campers and day visitors arriving by boat from Drake or that fly in from Jimenez on a charter flight. Meals are typical Costa Rican casados for lunch and dinner and gallo pinto (beans and rice) for breakfast. Portions are hearty, and the fare is simple but quite appetizing. Meals are served with cold water and cold fruit drinks made from dried mixes (like Tang, only not meant for astronauts) as well as coffee. Lunch and dinner typically includes: rice, bean, salad, some type of meat, fried bananas, and a fricassee palmito or potato dish or else stir fried mixed vegetables. Breakfast includes gallo pinto with eggs, cheese or ham, two types of fruit, toast and fried sweet bananas. Meals must be reserved in advance.There is no provision for food sales outside of this structure.

Electricity. Sirena Ranger Station has both an array of solar panels as well as a generator. Power is turned on facility wide from 5:30 to around 8:30 in the evening to provide guests with access to lighting in the early evening hours. After lights out, visitors must rely on their own flashlights and lighting facilities for reading or getting ready for bed. No electrical outlets are provided for small appliances or the charging of batteries, so visitors should bring fully charged cameras and other tech gadgets and spare batteries for flashlights.

Communications. Sirena Ranger Station does enjoy cell phone communications with the outside world, thanks to an antenna that provides signal to a portion of Costa Rica that is not covered by existing cell tower coverage. This telephone is for the use of the administrative staff only and is not available to the public. It is available in case of emergencies, and there is case-by-case flexibility to allow communications for guests faced with changes in their circumstances. Plan to be incommunicado while in the park and resist the temptation to request access to the telephone facilities in anything other than an emergency.

Alcohol. Alcohol is not permitted at Sirena Ranger Station or anywhere in Corcovado National Park

Cold Drinks. Formerly, ice cold soft drinks were available for sale at Sirena. That practice has since been phased out, so prepare yourself in advance for this slight deprivation. This fact makes the cold fruit punches and water served at meal times all the more appealing.