This weekend, the suds were in full effect as Left Hand Brewing hosted its second annual Nitro Fest in Longmont. This is the only beer festival in the U.S. with an all nitro lineup of beers — with more than 40 local and national breweries represented. Not only were the beers cascading, but guests showed up in costumes to be wowed by aerial dance, juggling, music and other performance art. Photographer Brandon Marshall was there to capture the drinking and dancing. For more photos, see our complete slideshow.