Our Encounter with the Miner (a hilarious suspense full-length chapter books for kids)

The Miller family is having a vacation at the White Mountain National Forest. While exploring the woods, they found a box that contained torn papers and discovered that the paper was a map. They decided to follow the map the next morning and when they finally arrived at the X mark, they found two armed men digging to start an illegal mining site. Upon seeing this, the two brothers got scared and immediately ran away. Will John and Calvin be able to run away from the armed men and stop their illegal activity?