San Gorgonio Wilderness is located in the San Bernardino Mountains in Southern California. This map is questionably the best and most up-to-date guide to the area. Printed on waterproof and tear resistant in beautiful colors, it is a very convenient guide to take along into this wilderness area. Scale 1:63,360 equals to 1 inch representing one mile. Contour interval 80feet. NOTE: Wilderness permit required to enter San Gorgonio Wilderness.