Chong Khao Khat also known as Issariyabhorn Pass, is a natural wonder with a rich history tied to the Phra Chudadhuj Palace. In the past, this area served as the site of a royal pavilion where King Chulalongkorn (Rama V) would come to admire the panoramic seascape. The defining characteristic of this site is the natural cleft in the mountain, created by centuries of wind and wave erosion, providing a window to the deep blue sea and white-capped waves crashing against the cliffs.

The unmissable highlight is the Vajiravudh Bridge, a pristine white bridge that winds along the edge of the rocky cliffs. Visitors can take a leisurely stroll to enjoy the refreshing sea breeze, marvel at the unique rock formations, and appreciate the lush coastal greenery that contrasts brilliantly against the ocean’s azure. Along the path, Thai-contemporary style pavilions offer shaded spots to rest and capture photographs in a peaceful, private atmosphere.

Along the nature trail winding through Chong Khao Khat, visitors can experience the acoustic echoes of the surf as it resonates within the limestone crevices and sea caves below a rare natural phenomenon. During low tide, vibrant tidal pools emerge among the rocks, teeming with miniature marine life such as rock crabs and sea urchins, transforming the area into a living natural classroom for families and those interested in coastal ecosystems.

Above the highest ridge, near the former royal pavilion site, lies a sanctuary of rare botanical species and naturally stunted trees that thrive within the limestone fissures. From this elevation, the perspective reveals the winding path below, resembling a white dragon embracing the mountainside. On clear mornings, you might spot White-bellied Sea Eagles soaring above the cliffs, a testament to the pristine biological diversity of Koh Sichang Island.

For those seeking a healing space, Chong Khao Khat in the early morning offers the perfect sanctuary. The profound silence, interrupted only by the rhythmic pulse of the ocean, provides a rare opportunity for true introspection. Experiencing the sea mist and the shifting shadows of the cliffs as the sun rises doesn't just offer stunning photography it offers a chance to reset your energy and return to the world deeply refreshed.

Beyond its natural splendor, Chong Khao Khat holds the prestige of being one of Siam’s earliest developed Sanatoriums, featuring a landscape meticulously planned since ancient times. The placement of stone benches and vantage points follows the principles of Aesthetics of Relaxation, allowing visitors to fully immerse themselves in the revitalizing energy of the Southwest Monsoon. Geologically, these cliffs serve as a world-class historical record, showcasing Paleozoic limestone strata carved by the sheer force of prehistoric waves until the mountain split into this magnificent pass. Walking here is not merely a sightseeing excursion but a journey back to an era when Koh Sichang was an international destination coveted by elite travelers from around the globe.

• From Koh Sichang Pier: Take a Skylab directly to Chong Khao Khat (approx. 40-60 THB) or include it in a chartered island tour.

• Motorbike Rental: Ride towards the west side of the island; the road is paved and easy to navigate, with ample parking at the entrance.

• Best Timing: Arrive between 16:30 - 18:30 to catch the sunset. The light during this window is soft, warm, and perfect for photos.

• Essential Gear: Bring a hat and sunglasses as the bridge area is exposed to direct sunlight. Ensure your camera is fully charged.

• Walking: The paths and bridges are stable, but use caution if you decide to climb down to the lower rocks, as they can be sharp and the waves occasionally surge.

• Refreshments: There are small cafes and food stalls at the entrance where you can buy drinks to enjoy with the view.

• Caution: Be mindful of wild monkeys that occasionally appear; it is advised not to feed them to preserve their natural behavior.

Admission Fee:

• No Admission Fee.

Opening Hours:

• Open Daily: 24 Hours

• Recommended visiting hours: 06:00 - 18:30 for safety and visibility