AMP: Oregon Caves Hwy #38/0 Location: OR 46 and US-199, Cave Junction No reassurance shield as OR 46 begins. AMP: 0 Location: OR 46 and Old Stage Rd, Cave Junction OR 46 is a long dead end to the Oregon Caves National Monument. AMP: 11 Location: OR 46 and Grayback Rd, Josephine Cty Reassurance shield 11 miles later, … Continue reading Oregon Route 46, US-199 to Oregon Caves Nat’l Monument