We want to prove that even wilful destruction cannot bring oblivion to that which mankind holds dear

Project member Bernard Weber

A team of international art historians and scientists is being formed to work on the project, using ancient and modern resources in their efforts to form completely accurate replicas.

Crucial measurements of the Buddhas were taken in the 1970s by a professor from Austria's Graz University, Robert Kostka.

They would be used to create computerised 3D representations of the Buddhas, which would be made available on the internet.

But ancient records are also expected to be used.

Arab and Chinese writings from centuries ago will be studied

Some descriptions of the Buddhas date back to the 12th and 13th centuries, written by Chinese and Arab travellers.

An appeal for �1m to fund the project has been launched in Switzerland by the two key organisers, Paul Bucherer, who runs an Afghan museum in Bubendorf near Zurich, and Bernard Weber, who runs internet site New7Wonders.org.

"We want to prove that even wilful destruction cannot bring oblivion to that which mankind holds dear," said Mr Weber, saying the Buddhas were unique in their significance.

Chinese stonemasons have already begun work on their own recreation of the Buddhas, in the western province of Sichuan. More than 300 craftsmen are working on carving a replica from sandstone cliffs.