When anxious tourists, a dark haunted house and high-speed photography meet, the results are pretty amazing.
The Nightmares Fear Factory in Niagara Falls, Canada continues to upload an abundance of hilariously terrified reactions to Flickr in what has to be the biggest gallery of frightened faces you'll ever see.
Just like last year, the "victims" range from groups of kids on awkward middle school dates to dads dressed up like Indiana Jones and just about everything in between. A select few brave souls don't appear to be phased by the giant flash, but that just makes the terrified people around them that much funnier.
You can see 43 of our favorite reactions below and check out the Nightmares Fear Factory Flickr for more hilarious photos.