Findings:

• cathedral train
• Cathedral Story
• Aachen Cathedral
• Milan Cathedral
• The cathedrals that didn't fall down
• An Episode of Cathedral History
• The Stalls of Barchester Cathedral
• Carlisle Cathedral
• Cathedral ceiling
• Bristol cathedral
• Glasgow Cathedral
• Amiens Cathedral
• Cathedral Park
• Salzburg Cathedral
• Canterbury Cathedral
• Ely Cathedral
• Southwark Cathedral
• Saint Francis Cathedral
• Norwich Cathedral
• Leicester Cathedral
• Trustees of the Cathedral
• Chester Cathedral
• The Cathedrals of Ice
• Secret Caverns
• Wailing Caverns
• Cumberland Caverns
• Stump Hole Cavern
• Blue John
• The Cavern Under the Sea
• Kartchner Caverns State Park
• Luray Caverns
• Pitfall II: The Lost Caverns
• Florida Caverns State Park
• St. Louis Cathedral
• Howe Caverns
• Caverned
• Cavern
• Carlsbad Caverns National Park
• Caverns of Zeux
• Why cathedrals?
• Wolfram's Cathedral
• Murder in the Cathedral
• St. Vitus Cathedral
• St Paul's Cathedral
• St. Denis Cathedral
• A Cathedral of One
• Rouen Cathedral
• Saint Patrick's Cathedral
• Bridal Chorus
• Saint Basil's Cathedral
• Cathedral of the Pines
• Liverpool Metropolitan Cathedral
• Liverpool Cathedral
• National Cathedral
• Cathedral Child
• Grace Cathedral
• Cathedral Church of St. Paul
• Cathedral of St. John the Divine
• Cathedral
• Cathedral of Christ the Savior
• Bayeux Cathedral
• Winchester Cathedral
• Brecon Cathedral
• Worcester Cathedral
• St Mary's Cathedral
• St Giles' Cathedral
• Durham Cathedral
• Gloucester Cathedral
• Lincoln Cathedral
• Exeter Cathedral
• The Cathedral and the Bazaar
• Cologne Cathedral
• Zagreb Cathedral
• Rochester Cathedral
• Hereford Cathedral
• Wells Cathedral
• Salisbury Cathedral from Bishop's Grounds
• Cathedral Basilica of St. Louis
• Cathedral of Learning
• Chartres Cathedral
• Dunkeld Cathedral

If you Log in you could create a "cathedral cavern" node. If you don't already have an account, you can register here.