The restoration of ancient towers at Mỹ Sơn Sanctuary has embarked on a new stage, helping preserve the relics while at the same time keeping their original value intact, experts have said.

The current restoration process is regarded as a transition in the application of research on the construction materials as well as archaeological methods in restoring the Chăm towers in Mỹ Sơn, members of the team said at a workshop held recently in the central province of Quảng Nam.

The workshop focused on highlighting the effectiveness of the technical process used on tower E7 and tower group G. This is regarded as evidence of the efficient co-operation between the UN culture agency UNESCO, Việt Nam and Italy.

Phan Hộ, director of the Mỹ Sơn relic management board, confirmed the effectiveness of technical solutions that have been used to restore Chăm towers in Việt Nam, particularly those in Mỹ Sơn, saying that thanks to the restoration process, the relics were stable and had avoided further deterioration, and the towers should withstand the impacts of both humans and the elements.

"Restoration makes the relics more sustainable. It does not change their original value but makes it clearer. Through the restoration work, people can understand the precious value of the heritage that our forefathers have left to us," Hộ told Dân Trí online newspaper.

Architect Hoàng Đạo Cương, deputy director of the Relic Conservation Institute at the Ministry of Culture, Sports and Tourism, said in his report after the workshop that the work on tower E7 and tower group G in Mỹ Sơn had provided useful information for the restoration of other Chăm towers across Việt Nam.

"With the relics’ outstanding values ​of culture and history in general, and architecture and art in particular; with conservation undertaken with technical conditions in the form of architectural and archeological ruins; with current financial and technical considerations, at the same time based on modern ideas, we can only choose one orientation suitable for the restoration of Chăm towers in Mỹ Sơn as well as others towers in central Việt Nam, that is: restoration for conservation and maintenance," Cương told Việt Nam News.

Important work: One of the Italian experts examines materials used to restore the Chăm towers in Mỹ Sơn.

Conservation work includes two main concepts – consolidation, or the strengthening of existing structures, and anastylosis, or the reconstruction of ruined monuments in an archeologically-responsible way, according to Cương.

The architect clarified the technical solutions employed for the restoration of the Chăm towers, saying that consolidation would increase the load-bearing capacity of structures which had suffered from landslides and cracks.

In modern restoration, Cương said, consolidation could use modern materials such as cement and steel to support the structure of the relic.

"Consolidation helps save the relic from collapse without replacing its original components, while anastylosis is understood as a rearrangement of the original components of the relic that have shifted or collapsed,” said Cương in his report.

Cương revealed that the remains of the Chăm towers were currently strewn around the site. Some had been broken or deformed, so they had to be gathered and identified before they could be returned to their original shape and position.

The restoration of the brick structures was undertaken to retain the original shape, leaving the possibility of full recovery for later generations when conditions were right to do so, he added.

In addition, during anastylosis, repositioned blocks would not alter the old construction techniques, the architect said.

Many temples in Mỹ Sơn had been restored by the methods of consolidation and anastylosis, according to Cương.

“These principles and technical solutions have made a contribution to preserving the Chăm architectural heritage around the country, and also helping make the Chăm towers in Mỹ Sơn a World Cultural Heritage,” said Cương.

Restoration: Researchers working near tower G.

Restoration  

Starting in 1898 with the discovery of the complex by M.C Paris, a group of French scientists led by Henri Parmentier worked with Charles Carpeaux at the French École Française d’Extrême-Orient (EFEO) on a project to explore and document the relics from February 3, 1904.

The architectural works were scattered across a valley roughly 2km wide between two mountain ranges.

The archeologists concentrated on the western area, where a large number of pieces were gathered first, before the scientists started work on groups A, E, and F.

The research work was interrupted until 1980 when the Việt Nam-Poland Bilateral Restoring Project led by Kazimierz Kwiatkowski began.

Polish archeologist Kwiatkowski worked with a group including architects, construction engineers, photogrammetry experts and archeologists. Vietnamese researchers were led by architect Hoàng Đạo Kính.

A UNESCO-Việt Nam- Italy co-operation project underwent three phases of restoration from 2003.

The project contributed to reinforcing the relics and reshaping the G temple group, simultaneously finding alternative materials for the restoration of the Chăm towers in general.

Italian experts surveyed and assessed various influences on the status of the relics, including those of geophysical, geological and hydrological conditions. They also conducted special research and discovered bricks, adhesives and original construction techniques available for the restoration.

Based on such research, the Government of Italy provided funding, under the auspices of UNESCO, to continue the implementation of a project on protecting the World Heritage of Mỹ Sơn.