Скачать или смотреть The Des Moines Iowa metro area has many purple streetlights video 06

0:00 Video begins 5 seconds before the end of the last video as with nearly every video, and the purple streetlights seen is on Northpark Blvd (41.655187, -93.743810) near the east most entrance to "Rain and Hail". This is near a water vein extending southwest ward into the bonds south of Rain and Hail.
00:19 Another purple streetlight (41.655387, -93.738076) is seen NNW of the Hilton Garden Inn Des Moines/Urbandale on Northpark Blvd. Notice that both the median and the part south of this section of road is rich in planted trees, but topographically this does not seem like a trough.
U-turn mad and lights seen again.
04:30 River Hill Surgery Center with pinkish lights shining up onto the building and a nearby purple streetlight (41.658030, -93.759117) are seen.
07:43 The last purple streetlight is seen again but from the west just south of SE 37th St. The descent of terrain is apparent from this perspective, but the location is not necessarily in line with a trough or fold, but if you zoom out substantially on a topographic map, you can see that this and all of those in this video are at or near the north periphery of the North Walnut Creek trough.
08:10 Another purple streetlight (41.658341, -93.752066) can be seen east of 100th on NW 54th St (confusing name because it is just a continuation of SE 37th St). I did not continue down that road to look for more over the hill.