Join Sinks Canyon State Park on a guided adventure into the Boulder Choke Cave System. The Boulder Choke Cave is an undeveloped cave system that spans about a quarter mile and takes guests under the Shadyside of the canyon. Tours include participants lowering themselves into the cave, 20 feet of crawling, lowering down a rope and climbing back up. There is also a short hike to the cave entrance. All participants are equipped with helmets, lights and overalls. Wear shoes…