Walker Valley Professional Review and Guide
"What do you get when you cross more than 10,000 acres of working forest with years upon years of ORV riders tattooing their signatures into the landscape? It’s simple: 30-plus miles of singletrack riddled with ruts deep enough to swallow entire bikes, mud as thick and slick as raw brownie mix, wild whoop-de-dos, dangerous descents, zigzagging switchbacks, and big banked turns as tall as the average NBA player.
Sounds fun doesn’t it! Welcome to the Walker Valley ORV Park, located just 10 miles south of Mount Vernon, Washington. Trail surface: Hard-packed dirt, roots, and rocks in the dry months; slippery mud and large, deep puddles in the rainy season."