![unionpacific up coaltrain dpus dpu ge ac4400cw tunnel27 tunnel pinecliffe cliff colorado train railroad locomotive co](https://live.staticflickr.com/744/31693324161_ce7c6fe284.jpg)
Tunnel 27
![snow fog firstflatiron flagstaffmountain mountain canyon gregorycanyon boulder colorado bouldercountyopenspaceandmountainparks landscape earthnaturelife wondersofnature](https://live.staticflickr.com/65535/49152241358_482ca1769b.jpg)
Boulder Buried In Snow, Shrouded in Fog
![southernpacific sp coaltrain unionpacific up curve tunnel1 plainview plain formerriogrande upmoffattunnelsubdivision moffattunnelsub railroad locomotive ge ac4400cw 345 colorado co](https://live.staticflickr.com/5595/30667965493_7b3c462faf.jpg)
View at Tunnel 1
![earthnaturelife wondersofnature snow mountain skiing forest flatirons boulder colorado landscape scenic bouldercountyopenspaceandmountainparks](https://live.staticflickr.com/65535/49787109697_ea98e9409b.jpg)
All Time Record for Snow
![winter snow xeriscape firstsnow vignette lightroom preset xeriscaping presets lightroompresets oldpolarpreset sonyrx100m2 gardengrassinsnow](https://live.staticflickr.com/780/22558364053_34dc184a45.jpg)
Snowy morning
![sunrise flatirons cuboulder aviewworthlowerpay tuscanarchitecture greenmountain newsnow universityofcoloradoboulder](https://live.staticflickr.com/65535/48960127626_70f8423e19.jpg)
Retention View
![](https://live.staticflickr.com/65535/49772346162_72ee809f14.jpg)
1987 06-27 0822 D&RGW SD40T-2-5399 E/B Plainview, CO
![sunset cootlake bouldercolorado winter reflection lenticularclouds ice hallowe’en](https://live.staticflickr.com/65535/48995332656_08a8601e82.jpg)
Feliz Dia de los Muertos
![bighornmountain goldhillroad bouldercounty firescars forestfires fourmilecanyonfire flagstafffire](https://live.staticflickr.com/65535/49483154386_7271ace5d8.jpg)
Mountain layers: burn scars
![anemone boulder bouldercounty boulderopenspace colorado coloradorockies easternpasqueflower pasqueflower pulsatillapatens ranunculaceae rockymountains bokeh flower flowers hirsute macro spring wildflower wildflowers eldoradosprings unitedstatesofamerica](https://live.staticflickr.com/65535/49876069388_16dbe29818.jpg)
Ready and Waiting
![cloud clouds lenticular dawn morning atmospheric atmosphere treetops sky tree cielo nube lasnubes nubes striated stacked atmosphericphysics](https://live.staticflickr.com/4463/37045003214_0832a2b357.jpg)
Lovely Lenticular Layers
![publicland openspace boulder bouldercounty bouldercolorado autumn indianpeaks frontrange rockymountains highplains trail path grass clouds park frontrangelandscape landscapephotography frontrangephotography colorado coloradophotography](https://live.staticflickr.com/4274/34913561455_8e00b6d489.jpg)
Tribute to Public Lands - Boulder County, Colorado
![canoneos5dmarkiv rokinon14mm royalarch boulder denver colorado lookout trail rocks flatirons hike hiking arch chataqua bluemesa climb summer co 2017 wideangle](https://live.staticflickr.com/4488/37417921536_29e0d5bc76.jpg)
royal arch
![aphrodite bearpeak boulder bouldercounty boulderopenspace colorado eveningstar evenstar landscape southboulderpeak venus blend lightpollution longexposure mountains multipleexposure newmoon night nightscape nocturnal planet stars eldoradosprings unitedstatesofamerica](https://live.staticflickr.com/65535/49896017793_2434eef80d.jpg)
Path to Aphrodite
![snow dirtroad stonewall](https://live.staticflickr.com/65535/49218190366_55b29441d7.jpg)
Old stone wall
![storm tree louisville colorado co mountains silhouette farmland shades horizon clouds darkclouds rain raining dusk weather stormy rainfall dark evening layers shadows shadow darkness fallingrain](https://live.staticflickr.com/8164/29407062280_2313c95dc9.jpg)
Evening Storm
![orchid cymbidium yellow tropical greenhouse universityofcolorado departmentofecologyandevolutionarybiology flower earthnaturelife wondersofnature](https://live.staticflickr.com/4893/33113885568_26a08ae329.jpg)
Yellow Orchid
![moffattunnelsub upmoffattunnelsub tunneldistrict californiazephyr amtrak](https://live.staticflickr.com/65535/50006468276_ae6d825a14.jpg)
Check Out the View!
![sky art weather night lights colorado colorful neon lafayette unitedstates wallart nighttime prints lightning lightening monsoons thunderstorms bouldercounty coloradothunderstorms jamesinsogna](https://live.staticflickr.com/5650/21948924330_d39658d28d.jpg)
Alien Power Line Explosion
![fallsunrise snow bouldercolorado arapahopeaks indianpeaks rockymountains sunrise](https://live.staticflickr.com/4500/23828264558_681227b813.jpg)
Frigid morn
![upmoffattunnelsub moffattunnelsub unionpacific](https://live.staticflickr.com/65535/50034778196_3655fbc80f.jpg)
Approaching Tunnel 2
![unionpacific up manifestfreight freighttrain emd sd402 3284 formerriogrande upmoffattunnelsubdivision moffattunnelsub tunnel1 plain plainview colorado train locomotive railroad co](https://live.staticflickr.com/5595/30903229141_1f32df4b20.jpg)
Climbing out of Tunnel 1
![superior colorado unitedstates bouldercolorado usa boulderco flatirons flatironsvistatrail mountains landscape panorama canon canon70d canon1585 hike hiking](https://live.staticflickr.com/5199/29582489614_2a5e92e088.jpg)
Flatirons Panorama
![burlingtonnorthernsantafe bnsf manifestfreight freighttrain upmoffattunnelsubdivision formerriogrande ge c449w dash9 locomotive train railroad crescent colorado co continentaldivide](https://live.staticflickr.com/8491/29422520012_83cc209df2.jpg)
Spotlight on Crescent
![railroad trees snow up train colorado co unionpacific locomotive plain whitestuff freighttrain plainview tunnel1 lateautumn manifestfreight mdvpv](https://live.staticflickr.com/669/22545597620_fc136fc9b9.jpg)
Among the white stuff…
![railroad train colorado shadows smoke clay co curve exhaust glint skitrain passengertrain northtablemountain riograndeskitrain big10curve upmoffattunnelsubdivision formerriograndeansco](https://live.staticflickr.com/781/23266632062_ecce3e0a38.jpg)
Smokin’ out of Clay
![railroad cliff up train colorado sp co unionpacific locomotive curve ge southernpacific coaltrain pinecliffe ac4400cw upmoffattunnelsubdivision](https://live.staticflickr.com/764/23312797179_664ae1ede4.jpg)
SP in spring snow
![amtrak californiazephyr no5 5 t29 tunnel29 cliff pinecliffe colorado upmoffattunnelsubdivision moffattunnelsub tunnel ge p42dc 56 train passengertrain railroad locomotive co](https://live.staticflickr.com/8200/29443883896_ed64312c68.jpg)
Above 29
![riograndeskitrain ansco passengertrain emd f40ph 242 tunnle29 pinecliffe colorado tunnel cliff skitrain railroad locomotive upmoffattunnelsub formerriogrande co bouldercreek](https://live.staticflickr.com/4637/24488076177_a9e1eb27ce.jpg)
Grande colors at Tunnel 29
![riograndeskitrain ansco passengertrain skitrain emd f40ph 242 storm tunnel1 plain plainview colorado coalcreekcanyon milepost23 upmoffattunnelsub train railroad locomotive co](https://live.staticflickr.com/1775/43095685255_8b479eeff0.jpg)
Ski Train at milepost 23
![dawn sunrise fall autumn leaves foliage lake pond water reflection rocks sunlight clouds storm boulder bouldercolorado frontrange foothills rockymountains bouldercounty plains nature wetland preservation park](https://live.staticflickr.com/5605/31034889201_3bb53ed13e.jpg)
Autumn Dawn at Coot Lake - Boulder, Colorado
![amtrak californiazephyr cz ge p42dc heritage phasei phase1 pointlessarrow tunnel1 upmoffattunnelsub formerriogrande plain plainview colorado 156 train5 5 passengertrain co](https://live.staticflickr.com/4627/39588973851_204b69554f.jpg)
Pointless Arrow at Tunnel 1
![moonset hunter’smoon continentaldivide indianpeaks kiowapeak niwotridge coldfingers sugarloafmountain notabadroutetocommutetowork](https://live.staticflickr.com/1942/31692921768_ae416d6d63.jpg)
The Hunter Emerges
![unionpacific up emd sd90mach testcar 8503 plain plainview coalcreekcanyon formerriogrande upmoffattunnelsub electromotivedivision colorado co tunnel1](https://live.staticflickr.com/4701/39172331935_91a11c5a6e.jpg)
Four locomotives—24,000 h.p.
![fullmoon coldmoon wintersolstice continentaldivide sunrise winter](https://live.staticflickr.com/4847/46434908091_00acd7bb3e.jpg)
Solstice moon
![chicagonorthwestern cnw ge ac4400cw 8802 moffat unionpacific up formerriogrande tunnel cliffs rock curve upmoffattunnelsub tunnel29 cliff pinecliffe colorado coaltrain locomotive train railroad co](https://live.staticflickr.com/4794/40967738752_e9dc337188.jpg)
Green and yellow on the Moffat
![clouds treesihouettes backlighting foothillsoftherockies bouldercolorado](https://live.staticflickr.com/7800/45836418005_5246dd6c87.jpg)
Clearing storm
![bnsfrailway bnsf geb408 emdgp393 local bucklocal trains train railfanning railroad railfan railway railroads railroading rail rr railroadtrack colorado coloradorailroads coloradotrains](https://live.staticflickr.com/4772/26050618307_4ef9e456f0.jpg)
Storm Light Standard Cabs
![wildflowers 4thofjuly flatirons ratibpda](https://live.staticflickr.com/7324/27475673243_38ed3ac466.jpg)
Wildflowers salute the 4th
![burlingtonnorthernsantafe bnsf coaltrain curve elevation formerriogrande upmoffattunnelsub train railroad colorado plain plainview clay coalcreekcanyon clouds](https://live.staticflickr.com/7839/47214623431_bcf6f2e9de.jpg)
Coal Creek Canyon coal