Video: The intense preparation for Great American Beer Festival

DENVER -- The 2016 Great American Beer Festival is underway at the Colorado Convention Center.

The festival is now in its 35th year, and it still draws visitors to Denver from around the world.

FOX31 photojournalists Dave Althouse and Noah Skinner put together an inside look at how the brewers prepare for this major event.

The sold out festival runs through Saturday night.