Abstract: At least one plastic tube, is supported within the campsite ground by a double pointed support spike. On the interior of the tube of the device, is a gravity activated weight, which is supported upon a trip pin, which is slideable transversely through the tube, the pin having attached, a cord, which when struck by an intruder, will cause the trip pin to release the weight, which will strike an explosive primer, so as to alert the camper to the intruder's presence in the campsite.