A large, sheer rock cliff rises above a road tunnel cut through the rock. A wooden guardrail lines the road, and evergreen trees grow atop the cliff; distant hills are visible at left.
Sepia-toned real photo; printed caption at bottom; no white border.
No postmark. Divided-back AZO real-photo postcard (AZO stamp box with square corner marks, c. 1918-1930); sepia-toned, no white border. Pencil dealer/price code "PmLT 3-" at top left; card is otherwise unused — no address, no message, no stamp.
Cite this card
Oneonta Tunnel, Columbia River Highway, Oregon, postcard, c. 1907. PostalPast Collection. https://postalpast.com/postcard/oneonta-tunnel-columbia-river-highway-oregon. Accessed October 5, 2026.
