Historical Site of Vinh Moc Tunnels—is currently suffering from severe erosion.
Field observations show that a 60-meter stretch of the embankment has been heavily damaged by powerful waves. The structure’s core has been hollowed out, creating dangerous "frog tunnels" (deep undercuts). Numerous concrete slabs and protective structures have been dislodged and collapsed toward the water's edge. Directly above the eroded site is a concrete coastal path frequently used by locals and tourists.
Months after the initial erosion began, the area has turned into a hazardous depression. Waves have washed in trash, plastic bags, bottles, and animal carcasses, leading to environmental pollution and marring the coastal landscape.
Of particular concern is that this site sits within the Vinh Moc Tunnels, a Special National Historical Site and one of Quang Tri’s most famous landmarks, which draws large numbers of visitors.
Mr. Phan Truong Dinh, Head of the Vinh Moc Tunnels Management Board, stated that the damage was caused by Typhoon No. 10 in 2025. During the storm, massive waves repeatedly battered the embankment, destroying several structural components. He warned that if the erosion continues to spread, the road above faces a total collapse, potentially threatening the integrity of the historical site.

The erosion viewed from above. (Photo: T. Tuyen)

Mr. Bui Van Giang, a visitor from Cua Viet Commune, shared: “Walking along the coastal road near the tunnels, I saw the embankment deeply hollowed out with many concrete slabs collapsed into the sea. It’s quite dangerous. As this is a famous historical site, I believe it needs to be repaired soon to ensure public safety and preserve the local landscape.”
Regarding this issue, Mr. Vo Duc Dien, Chairman of the Cua Tung Commune People’s Committee, stated that the province has allocated 1.5 billion VND to address the erosion at this site. The commune is currently following the standard procedures to select a contractor. Repairs and reinforcement of the eroded embankment are expected to begin in March 2026 to ensure the safety of the Vinh Moc Tunnels, as well as for residents and tourists traveling through the area.