Wilderness Survival Skills: Camp Alarms

If you find yourself in a situation where you need to be alerted to intruders in your camp, knowing how to make camp alarms is an important addition to your wilderness survival skills.

The Trapper's Bible
Dale Martin presents a variety of do-it-yourself traps, snares, camp alarms and pathguards in "The Trapper's Bible," from small wire snares and transplant traps to defensive mechanisms.
Cover courtesy Paladin Press