NABSQNO 10T-559970-4959560
Phantom Natural Bridge in Marion County, Oregon
Photo by Jay Wilbur
NABSQNO 10T-559970-4959560. Phantom Natural Bridge is an alcove natural arch eroded through andesite. It is located in the Willamette National Forest, about 8 miles northwest of Detroit, in Marion County, Oregon. Access is via a confusing series of Forest Service roads, so a GPS receiver is useful in finding the arch. Vreeland included this arch as number 20-21 in his catalog and reported a span of 55 feet.
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