Related Clues:

• Antarctic covering
• Time-saver with locks
• 'An Inconvenient Truth' topic
• Feature of Mars or Venice
• See 131 Across
• Venice sight
• Shrinking feature
• Polar region
• South Pole feature
• Locks site
• Lake-to-lake link
• Ship's shortcut
• Arctic covering
• See 8 Down
• Polar expanse