The Crystal Caves are this week celebrating the International Day of Caves and the Subterranean World, promising “special offers” tomorrow.

The international event, organised by the International Show Cave Association, will be celebrated by show caves throughout the United States and Barbados in an effort to increase awareness about caves and their environmental value.

David Summers, president of Wonderland Ltd, operator of the Crystal Caves, said: “Caves and limestone regions make landscapes diverse, fascinating and rich in resources.

“Bermuda’s Walsingham Formation is approximately 1.6 million years old. The vast majority of Bermuda’s caves are to be found in this formation.

“All of the staff at The Crystal Caves of Bermuda share a passion for protecting these caves and educating people about them. That’s what the International Day of Caves and the Subterranean World is all about.”

Mr Summers said both the Crystal and Fantasy caves have had “substantial” upgrades in recent years, urging the public to use the opportunity to see a unique part of Bermuda’s ecology.

“While the majority of Bermudians have visited the Crystal Caves at least once in their lifetime, it is usually when they are very young,” he said. “Both Crystal Cave and Fantasy Cave have been substantially upgraded in recent years, both in terms of lighting and trails.

“Bermudians and visitors are invariably amazed how attractive these caves are in the present day, and are well worth revisiting.”