Related Clues:

• Noah and Mel go around inspection chamber
• Another name for an inspection chamber
• Regularly launch into tunneller's underground entrance
• Underground vault access
• Kind of cover on a street
• Kind of cover in the street
• Sewer opening
• Street access cover
• It has a round cover
• Drain cover in island dump
• Spooner's Chinese sleeper agent that goes deep under cover?
• Covered underground access
• Way underground?
• Chap has difficulty — getting down this?