The original pagoda is estimated to date back several centuries, with local chronicles suggesting it contained sacred relics.
The structure collapsed into the Mekong River in 1847 after persistent erosion weakened the bank.
During the dry season, the tip of the submerged stupa can be clearly seen protruding above the waterline.
The site is locally referred to as the 'Pagoda in the Middle of the River'.
It is a popular site for the annual Naga Fireball festival, where spectators gather to observe the phenomenon from the nearby banks.
Phra That Klang Nam is a submerged pagoda located in the middle of the Mekong River, approximately 200 meters from the Nong Khai shoreline. Originally built on the riverbank, the structure collapsed into the river during the 1847 flood due to heavy soil erosion. The stupa remained entirely underwater until a significant drought in the 1990s caused the river levels to drop, revealing its peak above the surface. Today, the original structure is monitored by the local harbor department to ensure it remains clear of passing boat traffic. A replica pagoda was constructed on the nearby bank for devotees to offer prayers when the water level is high. The pagoda is considered a spiritual landmark for locals and serves as a historical marker of the Mekong's shifting geography.
From a long-tail boat at a safe distance on the water, or from the designated viewpoint on the river promenade.
Visit during the dry season to see the physical remains of the submerged stupa protruding from the water.
Take a long-tail boat from the nearby pier for an up-close view of the structure.
Carry binoculars if viewing from the shoreline to see the detailed condition of the exposed pagoda tip.
Do not attempt to swim or climb onto the submerged ruins, as the river current is unpredictable and the structure is fragile.
Maintain a respectful distance when approaching the site by boat; keep noise levels low as it is a place of deep local reverence.
