NAZARE PORTUGAL OFF SHORE CANYON THREE TIMES DEEPER THAN THE GRAND - TOTAL MONSTER WAVES

EPIC QUEST TO CONQUER WORLDS BIGGEST WAVES by Paul Thuroux

Link to the full article from this month's Smithsonian Magazine.  The waves that are driven by encountering this extreme trench produce death defying waves for surfers brave or crazy enough to try them.  100 feet or more!