On June 27, the People’s Committee of Quang Ngai province submitted a proposal to the Ministry of Culture, Sports and Tourism to classify To Vo Arch (Tay An Vinh village, Ly Son district) as a national heritage site. This significant move aims to recognize and protect a natural wonder that has captivated visitors with its unique beauty and geological history.
The Million-Year-Old Volcanic Formation of To Vo Arch

To Vo Arch: A Unique Landmark and Its Proposed National Heritage Status
Standing approximately 20 meters long, with its peak rising 4 meters above the eroded sea surface and its narrowest point spanning about 2 meters, To Vo Arch is celebrated for its wild, distinctive, and unparalleled beauty. Its iconic silhouette has made it one of the most famous scenic spots in Quang Ngai province and indeed, across Vietnam.
The arch’s unique form and geological significance have drawn both tourists and scientists alike, contributing to the island’s growing reputation as a geotourism destination. Recognizing its profound natural and aesthetic value, the People’s Committee of Quang Ngai province has formally submitted a proposal to the Ministry of Culture, Sports and Tourism, advocating for its classification as a national heritage site. This designation would further protect and promote this extraordinary geological formation for future generations.
To Vo Arch: A Unique Landmark and Its Proposed National Heritage Status

To Vo Arch: A Unique Landmark and Its Proposed National Heritage Status
Standing approximately 20 meters long, with its peak rising 4 meters above the eroded sea surface, and a narrowest point spanning about 2 meters, To Vo Arch is celebrated for its wild, distinctive, and unparalleled beauty. Its iconic silhouette has made it one of the most famous scenic spots in Quang Ngai province and across Vietnam. Recognizing its profound natural and aesthetic value, the People’s Committee of Quang Ngai province has formally submitted a proposal to the Ministry of Culture, Sports and Tourism, advocating for its classification as a national heritage site. This designation would further protect and promote this extraordinary geological formation for future generations.
The proposal highlights not only the arch’s visual appeal, drawing tourists and photographers alike, but also its critical importance as a testament to the region’s geological history. The national heritage status would provide a framework for sustainable tourism, ensuring that the site’s natural integrity is maintained while allowing visitors to appreciate its splendor. Furthermore, it would unlock resources for research and conservation efforts, deepening our understanding of the volcanic processes that sculpted this magnificent landmark. The classification aims to strike a balance between preservation and accessibility, securing To Vo Arch’s legacy as a natural treasure for Vietnam and the world.
Discovery of an Underwater Volcanic Arch Near Ly Son Island

Discovery of an Underwater Volcanic Arch Near Ly Son Island
Beyond the captivating beauty of To Vo Arch on land, the surrounding waters of Ly Son Island guard another remarkable geological feature. In 2014, archaeological experts discovered a similar underwater volcanic arch off the coast of Bé Island. This submerged formation, also carved from volcanic rock, mirrors the structure of its terrestrial counterpart, providing further insight into the region’s dynamic volcanic past.
Extending nearly 100 meters, the underwater arch features a vaulted section approximately 20 meters in length. Rising about 5 meters from the seabed at its highest point, this submerged arch adds another layer of geological wonder to the Ly Son archipelago. Its discovery enriches our understanding of the intense volcanic activity that shaped this unique landscape, highlighting the interconnectedness of the island’s geological formations both above and below the sea.
Ly Son Island: A Haven of Volcanic Landscapes, Pristine Beaches, and Rich Culture

Ly Son Island: A Haven of Volcanic Landscapes, Pristine Beaches, and Rich Culture
Ly Son Island, beyond its geological significance, presents a captivating blend of natural beauty and cultural richness. Situated 17 nautical miles off the coast of Quang Ngai province, this island district, encompassing both Big and Small Islands, is home to around 22,000 residents. The archipelago’s volcanic origins have sculpted a dramatic landscape, attracting tourists seeking both adventure and relaxation.
The island boasts a unique allure, drawing visitors with its combination of:
- Ancient volcanic landscapes
- Pristine beaches
- Vibrant local culture
- Delicious fresh seafood, and
- The renowned Ly Son garlic
Welcoming an average of 250,000 tourists annually, Ly Son thrives as a destination where geological wonders meet authentic Vietnamese culture, offering a memorable experience for every traveler.
Final thoughts
Ly Son is an island district in Quang Ngai province, located 17 nautical miles from the mainland. The district covers an area of about 10km2 with a population of approximately 22,000 people, comprising Big Island and Small Island. The area bears traces of 10 volcanic craters, three of which are located underwater. Ly Son Island boasts numerous ancient volcanic craters, beautiful beaches, and pristine landscapes. Additionally, Ly Son is renowned for its fresh seafood, especially its specialty garlic. On average, Ly Son Island welcomes about 250,000 tourists annually, making it a vibrant destination for both natural beauty and cultural experiences.
