4 Pics 1 Word Puzzles

What is the 1 word (6 letters) answer to the puzzle below? Scroll down to see the answer!

4 Pics 1 Word Answer 6 letters for tube for underground transportation, couple waiting on underground train platform, woman running through dark underground tunnel, hero sandwich on hoagie

Tube, Train, Tunnel, Sandwich

The Answer is:

SUBWAY
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