At least they didn't blow it up

Actually they do have some good advice in the article.

Treasure Hunt in Park Causes Bomb Scare

Jan 8, 2007 08:21 AM

A treasure hunting game in a North Fond du Lac park caused some tense moments Sunday morning.

Police called in the Brown/Outagamie County Bomb Squad when someone reported seeing a man put a suspicious object on the ground at Yellowstone Trail Park. Police found it was a PVC pipe and a small plastic container.

They eventually learned from others in the area that it was part of geocaching, a hide-and-seek game using different navigational techniques.

All the container had inside was paper and a pencil, so the bomb squad was called off.

Officers suggest that geocachers clearly mark their caches, and be ready to show that they are harmless.

At least one Brown County sheriff's deputy says he recalls this kind of incident happening before. He recommends calling your local parks department before geocaching to get permission and find out what the local regulations are.