There's a strange strip of Class G airspace just East of the Grand Canyon and I have wondered what is the purpose. It doesn't seem associated with any VFR flyways, there's a gap near L41 Marble Canyon that would indicate the 32nm long top "spar" is there to serve uncontrolled VFR traffic to that airport, but the bottom "spar" seems to start randomly, head randomly for 13nm (153°M/333°M) (to Cedar Ridge) then turns West to point off in another random direction (012°M/192°M) for 19nm.
The "spar" nature suggests a narrow VFR airway, but I don't see a reason for one to exist; and the diverging widths (.25-1.1nm) suggests that it's built from VOR radials, but there's nothing at their convergence (the 153°M/333°M spar is sort of aligned with the DTA VOR to the North, if that VOR were 11nm further South, and the 012°M/192°M spar is sort of alligned with DRK VOR, if that VOR were 5nm further East, and with INW VOR, if that VOR were 13nm West).
Just a WAG here... a training airway for Embry-Riddle Prescott?
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