In 996, the abbey at Pannonhalma was established, predating the founding of the Kingdom of Hungary by four years. Perched atop a high hill in northwestern Hungary, the abbey contains the nation’s oldest collection of books and many of its earliest significant written records.

For more than a millennium, the abbey has been one of Hungary’s most significant religious and cultural sites, as well as a notable landmark in Central Europe, enduring through centuries of warfare and foreign invasions, like the 16th-century Ottoman conquest and occupation of Hungary.

Ilona Ásványi, the director of the Pannonhalma Archabbey library, expressed that she feels “humbled” by the historical and cultural riches the collection holds every time she visits.

“It is dizzying to think that there was a library here a thousand years ago, and that we are the keepers of the first book catalogue in Hungary,” she said.

Among the library’s most outstanding works are 19 codices, including a complete Bible from the 13th century. It also houses several hundred manuscripts predating the invention of the printing press in the mid-15th century and tens of thousands of books from the 16th century.

While the oldest and rarest prints and books are stored separately and have not been infected, Ásványi said any damage to the collection represents a blow to cultural, historical and religious heritage.

“When I see a book chewed up by a beetle or infected in any other way, I feel that no matter how many copies are published and how replaceable the book is, a piece of culture has been lost,” she said.

Books will spend weeks in an oxygen-free environment

To kill the beetles, the crates of books are being placed into tall, hermetically sealed plastic sacks from which all oxygen is removed. After six weeks in the pure nitrogen environment, the abbey hopes all the beetles will be destroyed.

Before being reshelved, each book will be individually inspected and vacuumed. Any book damaged by the pests will be set aside for later restoration work.

Climate change may have contributed

The abbey, which hopes to reopen the library at the beginning of next year, believes the effects of climate change played a role in spurring the beetle infestation as average temperatures rise rapidly in Hungary.

Hajdu, the chief restorer, said higher temperatures have allowed the beetles to undergo several more development cycles annually than they could in cooler weather.

“Higher temperatures are favorable for the life of insects,” she said. “So far we’ve mostly dealt with mold damage in both depositories and in open collections. But now I think more and more insect infestations will appear due to global warming.”

The library’s director said life in a Benedictine abbey is governed by a set of rules in use for nearly 15 centuries, a code that obliges them to do everything possible to save its vast collection.

“It says in the Rule of Saint Benedict that all the property of the monastery should be considered as of the same value as the sacred vessel of the altar,” Ásványi said. “I feel the responsibility of what this preservation and conservation really means.”