42° 56′ N, 122° 07′ O: Davis Lake volcanic field +02 163, 2790 av. J.-C. 43° 34′ N, 121° 49′ O: Devil's Garden Volcanic Field +01 525,? 43° 30′ 43″ N, 120° 51′ 40″ O: Diamond Craters +01 450,? 43° 06′ N, 118° 42′ O: Fort Rock +01 716,?.