Route 66 / Area 51 USA TOUR 1997 - 1999: Satellite & Aerial Images On the left, near Parks, several alignments of Route 66 converge and branch. Extending down from Fortynine Hill are the 1921 and 1931 alignments, which separate at the blue dot. The 1931 alignment (yellow dot) extends for about a mile, then rejoins the others. The 0.5 mile 1921 alignment (second blue dot) is just in Vacation > Route66with system:unfiled