Mount Jefferson is an inactive stratovolcano in the Cascade Volcanic Arc, the Cascade Range and is the second-highest mountain in Oregon. Situated in the far northeastern corner of Linn County about 60 miles (96 km) east of Corvallis, Jefferson is in a rugged wilderness and is thus one of the hardest volcanoes to reach in the Cascades (logging road 1044 does come within 4 miles (6 km) of the summit, however).