Carry a police whistle and small mirror for emergency use. Rodent Burrows Avoid setting up camp near rodent burrows. Fleas from rodents, if they bite you, can transmit the bubonic plague . When encountering travelers with horses or pack stock, move off the trail on the uphill side and allow them to pass. If you plan to use a portable stove or build a campfire , you must either obtain a wilderness permit for the wilderness area, or in areas where wilderness permits are not required, obtain a California Campfire Permit .
Some areas restrict use of campfires and portable stoves during periods of high fire danger.
Campfires are never allowed in Desolation Wilderness. By using only a small amount of wood, campers who come after you will be able to enjoy a campfire , too. Select a level spot away from overhanging trees, bushes, or dry grass. Avoid the base of steep hills, as fire travels uphill quickly. Clear a circle 10 feet across down to bare dirt.