It was incredibly dark at the end of the PGA Championship

This is stunning.

Actual light at #Valhalla#Pgachampionshippic.twitter.com/lrlazCFJRH

— Bill Michaels (@Bill_Michaels) August 11, 2014

Rory McIlroy won the PGA Tour Championship at Valhalla Golf Club, and he needed to do it in near-darkness. The round ran long because of a weather delay, forcing players to finish out the round in astoundingly low light.

This is a shot showing just how dark it was at Valhalla when Rory won.