Related Clues:

• Stuff in a pit
• Viscous stuff
• La Brea gunk
• Pit sight
• Roof covering, perhaps
• Highway sealer
• Fossil repository, often
• Pit contents, perhaps
• Pitch for the road crew?
• Surfacing stuff
• 49-Across source
• Feather partner
• It may pave the way
• Camel hazard?
• Roofing gunk