Nan Madol is one of the most mysterious and impressive archaeological sites in the Pacific. Located just off the coast of Temwen Island, this ancient complex consists of over ninety man-made islets built from massive basalt columns and coral fill. These islets form a network of canals and stone structures — some weighing up to 90 tons — that once served as the ceremonial and political center of the island. For centuries, the Saudeleurs, a powerful and absolute dynasty, ruled Pohnpei from this megalithic capital.

Divided into two main sections — Madol Pah, the administrative hub, and Madol Powe, the sacred heart of the complex — Nan Madol stands as a rare example of monumental stone architecture in the Pacific. Often called the “Venice of the Pacific,” it has drawn comparisons to Machu Picchu, Stonehenge, and Rapa Nui, yet remains one of the least visited UNESCO World Heritage Sites in the world.

To explore Nan Madol is to step into a lost chapter of Pacific history — awe-inspiring, enigmatic, and unforgettable.

For more details about Nan Madol’s history, visit: Nan Madol Ruins – Pohnpei Eco-Adventure Guide.

Located along Pohnpei’s eastern coastline located in the kingdom of Madolenihmw, Kepirohi Waterfall is one of the island’s most accessible and scenic freshwater waterfalls. Surrounded by dense tropical rainforest and the sounds of flowing water, this natural swimming spot offers a refreshing introduction to Pohnpei’s lush interior before continuing onward to Nan Madol.

The waterfall is fed by Pohnpei’s abundant rainfall, which flows through the island’s volcanic landscape before cascading over smooth basalt rock formations into a clear freshwater pool below. A short walk from the road brings you to the falls, where guests can cool off, take photos, and experience a small glimpse of the island’s unique freshwater ecosystems. Like much of Pohnpei, the area can be wet and slippery after rainfall, so visitors should wear footwear suitable for uneven and natural terrain.

As part of our Nan Madol tour, Kepirohi Waterfall provides the perfect balance between Pohnpei’s ancient cultural heritage and its incredible natural environment—combining rainforest, freshwater, and ocean landscapes into one unforgettable island experience.

Activity Level: EASY

Join us for a scenic guided van tour to Nan Madol, with a refreshing stop at Kepirohi Waterfall along the way. The tour typically lasts around 6 hours, though it can easily be tailored into a shorter morning or afternoon excursion depending on how much time you’d like to spend exploring the ancient city.

From Kolonia, the drive to Nan Madol takes approximately 45-60 minutes, following Pohnpei’s eastern coastline through lush rainforest, villages, and coastal scenery. Our guide will lead you through the archaeological site, sharing the history, legends, and cultural significance of what is often called the “Venice of the Pacific.”

Reaching the main ruins requires a relatively short walk of approximately 10-15 minutes along a combination of coral gravel paths, natural trails, and uneven stone surfaces. While the walk is not particularly strenuous, the terrain is uneven and can be muddy after rain, and slippery in places. Comfortable walking shoes or sturdy sandals that can get wet are highly recommended.

One of the most memorable parts of the visit is crossing a tidal canal to reach the central section of the ruins. Depending on the tide, you’ll wade through clear ocean water ranging from ankle-deep to around knee or thigh height. During exceptionally high tides, the water may be slightly deeper for some visitors. Our guides are familiar with the conditions and will help you choose the safest times to visit and crossing point, but visitors should be prepared to get their feet—and often their legs—wet.

Nan Madol remains largely untouched by modern development, which is part of what makes the experience so special. There are no boardwalks, handrails, or visitor facilities throughout the ruins, allowing guests to experience the site in a setting much like explorers have for generations. The tropical climate also means brief rain showers are common, even on sunny days.

Your tour includes all transportation, entry and landing fees, chilled drinking water, fresh banana bread, and cold coconuts (when available). There are no shops or food vendors at Nan Madol, so if you’d like a more substantial meal, we recommend bringing your own snacks or lunch. We also suggest bringing sun protection, insect repellent, a hat, a towel, and a waterproof bag for any electronics or valuables.

Activity Level: EASY

For those looking for the most immersive Nan Madol experience, our combined van and boat tour offers a unique perspective that few visitors get to enjoy. The adventure begins with a scenic drive from Kolonia to Kepirohi Waterfall for a refreshing stop before continuing to the nearby boat launch.

From there, you’ll board one of our boats and journey approximately 6-8 miles (10-13 km) around Temwen Island. The route winds through tranquil mangrove forests, across reef systems, past river mouths, and over a shallow sandbar where manta rays, eagle rays, and stingrays are often spotted gliding through the clear water. Along the way, you’ll gain spectacular views of Nan Madol‘s towering basalt walls, canals, and outer islets—vantage points that simply can’t be experienced from land.

After arriving at Nan Madol by boat, you’ll disembark and explore the archaeological site on foot with your guide. Like the land-based tour, expect a short walk over uneven coral paths and natural terrain, with some areas becoming slippery after rain. Depending on the tide and your landing location, you may still encounter shallow water crossings, so footwear that can get wet is recommended.

The complete experience typically lasts around 6 hours, though the exact duration depends on weather, sea conditions, and how long you’d like to spend exploring the ruins. Because access by boat relies on suitable tides and ocean conditions—particularly during the summer months when exceptionally low tides can make navigation difficult—this tour is offered only when conditions allow. We’re happy to advise you in advance and recommend the best day for your visit.

As with any open-water excursion, expect some sea spray and the possibility of getting wet during the boat ride. We recommend bringing sun protection, a light rain jacket, swimwear or quick-drying clothing, a towel, insect repellent, and a waterproof bag for cameras or other valuables. There are no food vendors at Nan Madol, so you’re welcome to bring additional snacks or a packed lunch.

Your tour includes all transportation, boat transfers, entry and landing fees, chilled drinking water, fresh banana bread, and cold coconuts (when available). Combining scenic coastal cruising with an in-depth exploration of the ancient city, this tour offers one of the most memorable ways to experience one of Micronesia’s greatest archaeological treasures.

For rates, bookings, or more information about visiting Nan Madol, please contact us at pnisurfclub@gmail.com.

You can also explore more about the site and its history through these resources:

• Nan Madol Ruins – Pohnpei Eco-Adventure Guide

• Reclaiming the Hidden Islets of the Nan Madol World Heritage Site – YouTube