it's scary. >> i got hit by a wave and i was going backwards when i was trying to go forward. >> lake shore drive boasts one of chicago's most stunning backdrops. popular with tourists, outdoor enthusiasts and commuters. eric nelson lives across the street in a high rise with spectacular views of the water front. >> it's usually just packed. lots of runners, lots of people on their bikes. >> but on september 30th, 2011, high waves on lake michigan pummeled the shoreline raging out of control. >> i first realized something out of the ordinary was happening that morning when i got up. >> eric is surprised to see enormous waves crashing against the shoreline below. he records the scene to show friends and then heads out to investigate. >> waves were coming up 20, 30