This is a small park located in Bonners Ferry, just off of Hwy 95 north of the river. There are two historic signs telling about the Kootenai Tribe and E.L. Bonner, who the town is named after. There is a small parking area beside the park for cars, but larger or extended cab vehicles may extend out into the street. There is a medical clinic next to the park that has more room.
You are looking for a pill bottle hidden behind two rocks. Please, replace the container and camouflage as found, as children frequent the park. The container should be available in the winter, but make sure the footprints you leave behind don't lead directly to and from GZ. Stealth may be needed due to the clinic and foot traffic on the nearby bridge.