Niagara Falls welcomes roughly 9 million visitors every year, and the sprawling parks in the surrounding region are also a popular destination for outdoor enthusiasts. But much of the essential maintenance work that ensures these natural havens are safe for visitors takes place behind the scenes. Over time, the cliffs that hug the Niagara River can erode, causing rocks to tumble onto the walking and hiking trails below. Statewide rope access coordinator Andy Chouinard took us along on a recent operation at Devil’s Hole State Park to show us how his crew fearlessly scales steep ledges to manage the loose dolomite that would pose a danger to hikers. For more, visit: parks.ny.gov niagarafallsstatepark.com WATCH MORE DEEP CLEANED VIDEOS: Deep Cleaned Season One Marathon | Deep Cleaned | Insider youtube.com/watch?v=-6yxCq-vnqo How Super Bowl Fields Are Deep Cleaned And Prepped For Game Day | Deep Cleaned | Insider youtube.com/watch?v=CQGeLRkmJ4c&t=0s How A...