• In Idaho: There are 21 remaining Idaho caches placed during the sport's first year. A good place to find information about them is at Waypoint GC1A9J1.

• Growing numbers: At last count, there were nearly 6,000 geocaches hidden in Idaho — at least 1,000 of those are within 15 minutes of downtown Boise; 1,000 more are within an hour of the city center.

• The Rainbow Bridge incident: Once in a while geocachers get a little too creative. This was the case of Scot Tintsman of Meridian who found himself answering some tough questions about a container he placed under Rainbow Bridge on Idaho 55 north of Smiths Ferry in 2006. A state bridge-inspection crew found the container and alerted officials, who proceeded to close the highway for seven hours.

Source: The Idaho Statesman