Related Clues:

• Lock sites
• Venice ways
• Ear parts
• Martian topography
• Soo and Erie, e.g.
• Waterways
• Man-made waterways
• 'Streets' of Venice
• Gondolas' courses
• Mars markings
• Connecting waterways
• Venice byways
• Ear features
• Channels you can't surf
• Shortcuts for ships