Roadtrip across the country: Day 3 Day 3: Grand Junction, CO to Denver, CO We visited the Colorado River!There were many river rafters and kayakers going down! And then we played frolf at the Copper Mountain course-at 10,000 feet! A little peek at the course. We were able to retreive an overshot disc! Yay! After more driving, we stopped to see the Colorado Flatirons. There was a storm in the mountains, so we got to listen to thunder during our long hike. Here, they are! The Flatirons!Adventure dog! We loved you Colorado!