Possible Clues:

• Burial chamber with vaulted tunnels
• Comb a cat found in vault
• Subterranean burial site
• Tiger needs a groom in this chamber!
• Give pussy a grooming underground
• Underground Roman burial place
• Perhaps give a pussy a gromming in the underground
• Pussy may be late for a grooming underground
• Vault and bring up a curry
• Modern kind of scanner to search around a burial site