Begin with a 30 Minute orientation tour and following the orientation, descend approximately 180 feet (55 metres) into the historic tunnel and walk through the 2,200-foot (670-metre) passage carved beneath Niagara Falls. At its end, step onto the breathtaking Observation Deck, where you'll experience one of the most extraordinary viewpoints in North America. Standing deep within the Niagara Gorge, you'll be surrounded by the thunderous roar of the Horseshoe Falls as millions of gallons of water plunge over the crest every minute. Feel the cool mist, witness the immense power of the falls from below, and enjoy a perspective unlike any other—a view that few visitors ever experience and one that simply cannot be appreciated from above. This is Niagara Falls from its most dramatic and unforgettable vantage point. Beneath the falls.