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197145 sightings reported...
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Colorado (United States)

Sighted on Sunday 28. January 2018
Reported on
Shape: N, A | Duration: 00:05:00
Source:

I took these pictures from my flight over colorado last week. this appears to be a massive structure isolated in the mountains with no visible roads leading to or from.

Images

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Top 100 nearest sightings ordered by sighting date (100 miles radius):

Location Sighted on Shape Duration
Location Sighted on Shape Duration
Castle Rock, Colorado (United States) 2019-04-30 Triangle 00:04:00
Breckenridge, Colorado (United States) 2019-04-30 Circle 00:00:40
Breckenridge, Colorado (United States) 2019-04-30 Circle 00:00:30
Denver, Colorado (United States) 2019-04-26 Other 00:03:30
Denver, Colorado (United States) 2019-04-26 Square, Rectangular 00:00:10
Glendale, Colorado (United States) 2019-04-20 Cigar 00:05:00
Aurora, Colorado (United States) 2019-03-08 Disc 00:00:20
Lakewood, Colorado (United States) 2019-02-16 Sphere
Westminster, Colorado (United States) 2019-02-01 Unknown
Aurora, Colorado (United States) 2019-01-20 Circle 00:00:02
Aurora, Colorado (United States) 2019-01-07 Circle 00:15:00
Littleton, Colorado (United States) 2019-01-05 Oval 00:00:03
Englewood, Colorado (United States) 2018-12-20 Sphere 00:02:00
Colorado (United States) 2018-12-19 Unknown 00:20:00
Denver, Colorado (United States) 2018-12-15 Sphere 00:02:00
Denver, Colorado (United States) 2018-12-15 Sphere 00:02:00
Littleton, Colorado (United States) 2018-10-19 Star-like 00:11:09
Colorado (United States) 2018-10-04 Disc 00:03:00
Aurora, Colorado (United States) 2018-10-03 Star-like 00:06:00
Denver, Colorado (United States) 2018-09-30 Fireball 00:05:00
Aspen, Colorado (United States) 2018-09-13 Cross 00:02:00
Aurora, Colorado (United States) 2018-09-08 Flash 00:00:03
Idaho Springs, Colorado (United States) 2018-09-07 Oval 03:00:00
Denver, Colorado (United States) 2018-08-27 Unknown 00:00:12
Franktown, Colorado (United States) 2018-08-26 Square, Rectangular 00:05:00
Granby, Colorado (United States) 2018-08-25 Boomerang 00:02:00
Greenwood Village, Colorado (United States) 2018-08-23 Circle 00:05:00
Arvada, Colorado (United States) 2018-08-19 Unknown 00:03:00
Broomfield, Colorado (United States) 2018-08-18 Sphere 00:28:00
Colorado (United States) 2018-08-18 Circle 00:00:15
Colorado (United States) 2018-08-12 Egg
Colorado (United States) 2018-08-07 Flash 01:00:00
Arvada, Colorado (United States) 2018-07-15 Flash 00:00:30
Edgewater, Colorado (United States) 2018-07-14 Cylinder 00:01:37
Colorado (United States) 2018-07-04 Saturn-like 00:05:00
Denver, Colorado (United States) 2018-06-06 Fireball 00:01:00
Golden, Colorado (United States) 2018-05-21 Cylinder 03:00:00
Highlands Ranch, Colorado (United States) 2018-05-04 Circle 00:10:00
Arvada, Colorado (United States) 2018-05-01 Unknown
Westminster, Colorado (United States) 2018-04-23 Other 01:00:00
Denver, Colorado (United States) 2018-04-20 Triangle 00:00:10
Colorado (United States) 2018-04-14 Star-like 00:15:00
Colorado (United States) 2018-04-10 Triangle 00:35:00
Aurora, Colorado (United States) 2018-04-07 N, A 00:02:01
Northglenn, Colorado (United States) 2018-03-04 Circle 00:01:00
Monument, CO (United States) 2018-03-02 star-shaped 30 min. (plus)
Woodland Park, Colorado (United States) 2018-03-02 Sphere 00:00:15
Denver, Colorado (United States) 2018-02-11 Other 00:01:00
Colorado (United States) 2018-02-06 Teardrop 00:05:00
Denver, Colorado (United States) 2018-02-06 Other 00:04:00
Castle Rock, Colorado (United States) 2018-02-06 Sphere 00:10:00
Colorado (United States) 2018-01-28 N, A 00:05:00
Littleton, Colorado (United States) 2018-01-23 Boomerang 01:00:00
Morrison, Colorado (United States) 2018-01-17 Triangle 00:00:30
Colorado (United States) 2018-01-13 Sphere 00:30:00
Denver, Colorado (United States) 2018-01-01 Sphere 00:00:20
Parker, Colorado (United States) 2017-12-30 Circle 00:01:00
Englewood, Colorado (United States) 2017-12-09 Unknown 00:25:00
Denver, Colorado (United States) 2017-12-09 Other 00:04:00
Avon, Colorado (United States) 2017-12-09 Other 00:03:00
Edwards, Colorado (United States) 2017-12-09 Unknown 00:03:00
Aurora, Colorado (United States) 2017-12-09 Sphere
Parker, Colorado (United States) 2017-12-09 Circle 00:20:00
Boulder, Colorado (United States) 2017-12-09 N, A 00:11:00
Castle Rock, Colorado (United States) 2017-12-09 Disc 00:04:00
Parker, Colorado (United States) 2017-12-08 Sphere 00:02:00
Leadville, Colorado (United States) 2017-12-08 Disc 00:01:00
Castle Rock, Colorado (United States) 2017-12-07 Square, Rectangular 00:02:00
Castle Rock, Colorado (United States) 2017-12-05 N, A
Morrison, Colorado (United States) 2017-12-03 Circle
Aurora, Colorado (United States) 2017-11-30 Triangle 00:01:15
Boulder, Colorado (United States) 2017-11-24 Triangle 00:01:00
Arvada, Colorado (United States) 2017-11-21 Star-like 00:30:00
Ken Caryl, CO, USA 2017-11-15 Saucer 10-15 min
Denver, CO, USA 2017-11-15 Several floating lights 10 minutes
Louisville, Colorado (United States) 2017-11-13 Disc 00:00:06
Denver, Colorado (United States) 2017-11-12 Sphere 00:02:00
Greenwood Village, Colorado (United States) 2017-10-29 Triangle 00:00:30
Littleton, Colorado (United States) 2017-10-28 Unknown 00:05:00
Aurora, Colorado (USA) 2017-10-20 Pill 10 seconds
Brighton, Colorado (United States) 2017-10-18 Sphere 00:10:00
Colorado (United States) 2017-10-18 Unknown 00:15:00
Brighton, Colorado (United States) 2017-10-17 Other 00:02:00
Vail, Colorado (United States) 2017-10-04 Circle 00:00:05
Over Denver, CO (United States) 2017-10-01 Circle
Commerce City, Colorado (United States) 2017-09-25 Circle 00:00:03
Divide, Colorado (United States) 2017-09-20 Oval 00:00:15
Aurora, Colorado (United States) 2017-09-13 Star-like 00:00:07
Hot Sulphur Springs, Colorado (United States) 2017-09-13 Blimp 00:02:00
Denver, Colorado (United States) 2017-09-11 Fireball 00:05:00
Centennial, Colorado (United States) 2017-09-09 Unknown 00:30:00
Aurora, Colorado (United States) 2017-09-07 Disc 00:03:00
Denver, Colorado (United States) 2017-08-29 Square, Rectangular 00:06:00
Thornton, Colorado (United States) 2017-08-24 Fireball 00:02:00
Lakewood, Colorado (United States) 2017-08-23 Other 09:00:00
Denver, Colorado (United States) 2017-08-21 N, A
Lakewood, Colorado (United States) 2017-08-21 Disc 00:00:05
Arvada, Colorado (United States) 2017-08-21 Boomerang
Longmont, CO (USA) 2017-08-19 Roundish 1 hour
Frisco, Colorado (United States) 2017-08-19 Sphere 02:00:00