Mountain biker catches rattlesnake fight in Trione-Annadel State Park on video.

Out for a bike ride in Trione-Annadel State Park last week, Santa Rosa's Nicholas Moreda didn't expect to come face to face with some of the most dangerous snakes in Northern California.

But, that's exactly what happened when he was met with not one, but two, deadly Northern Pacific Rattlesnakes. Lucky for Moreda, the two reptiles were too preoccupied with each other to take much notice of him.