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pyxorium.com
Nathan Cassell
@pyxorium.com
1.4K followers 170 following 2K posts
Here for science, art, music
🚲 🏃‍♂️ 🌱 📷 🥧 Colorado

🎧 https://plyr.fm/u/pyxorium.com
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pyxorium.com
On the Fairmount Trail today 🏃‍♂️, nice weather!
Dry grass field, with a dirt path extending from the bottom of the frame toward the middle ground. A fence is on the left side of the path. Park regulations and trail map sign on the right side of the path. Flat mesa top of North Table Mountain in the distance, cloudy sky above. Fairmount Trail near Long Lake Regional Park, in Arvada, Colorado.
February 12, 2026 at 2:51 AM
pyxorium.com
From Sunday's trip along the Peaks to Plains Trail. There are two climbing areas on the far rock wall: "Graveyard" on the left and "Death Valley" on the right. Along the oxbow section of Clear Creek near Tunnel 5.
Oxbow section of Clear Creek, along the Peaks to Plains trail (between Golden and Idaho Springs, Colorado). The creek curves along the left foreground, with the surface water almost completely covered in ice. A patch of bare willows sits on a sandbar. The trail curves along the right foreground. Ponderosa pines, Douglas firs, and Rocky Mountain junipers are scattered about. Steep and rocky canyon walls extend toward the top of the frame, with a wedge of blue sky and white and gray puffy clouds above.
February 11, 2026 at 3:59 PM
pyxorium.com
Pleasant hike this evening at Mount Galbraith Park, took Nightbird Gulch Trail on way to the summit.
Mountain scene along the Mount Galbraith Summit Trail near Golden, Colorado. Dry grass and bare shrubs in the foreground, Rocky Mountain Juniper (Juniperus scopulorum) on very left and very right sides of the frame. One gnarled Ponderosa Pine tree (Pinus ponderosa) in the center. Boulders and rocks strewn about the middle ground, beyond the ridgeline lies the Denver Metro area, with the skyline of Denver faintly visible along the horizon to the left of the large pine. The trail proper is visible along the lower right portion of the frame. Blue sky above with several hazy white and gray clouds floating about.
February 11, 2026 at 3:23 AM
Reposted by Nathan Cassell
mr-dale-sawin.bsky.social
Building out the new stop for “westracks” shuttle.
Soon you’ll be able to take the light rail from Denver and hop on a shuttle that will take you from golden to Mathew winters, red rocks or Morrison
Easy peasy.

#openspace #redrocks #morrison #golden #lightrail #westracks
February 10, 2026 at 8:09 PM
pyxorium.com
Observatory near frozen Lake Michigan shoreline
Evanston, Illinois
Winter 1984-1985
Frozen Lake Michigan shoreline in foreground, dark steel blue lake water on horizon in left middle ground, a few bare deciduous trees and a white twin dome observatory structure with crisscross support bracing in right middle ground (Lindheimer Astrophysical Research Center). Hazy clear light blue sky above.
February 10, 2026 at 3:18 PM
pyxorium.com
Walking at Long Lake Regional Park this evening, work continues on the soccer fields. The old synthetic turf has been removed and new materials have arrived for installation. Bulk bags of flyash and rolls of AstroTurf.
Several large white bulk bags filled with black flyash (Red River Supply, Inc.) lined up in rows. At Long Lake Regional Park in Arvada, Colorado. Night scene. A blue Genie telehandler parked in a parking lot next to a pyramidal stack of astroturf rolls wrapped in white plastic. Overhead field lights in the distance. Black sky above.
February 10, 2026 at 6:00 AM
pyxorium.com
Angelina Stonecrop at the Denver Botanic Gardens
February 2017
Red and green needle-like foliage of groundcover sedum plant. At the Denver Botanic Gardens, in Denver, Colorado. [text on plant label: Crassulaceae, Stonecrop Family, Sedum rupestre 'Angelina']
February 9, 2026 at 3:30 PM
pyxorium.com
Peaks to Plains Trail today from Big Easy (Jefferson County) to Oxbow/Tunnel 5 (Clear Creek County) and back. People up there climbing all over the place.
Trailside access to the "Graveyard" climbing area in Clear Creek County. Informational sign posted with hours, restrictions, and guidelines. Rocky area in foreground, bare vegetation in middle ground along with a person hiking up the trail with climbing gear, rock wall outcroppings above. People climbing with ropes on the side of a flat rock wall in the "Catslab" climbing area. In Clear Creek Canyon, west of Golden, Colorado. Small group of climbers gathered at resting area in the "Death Valley" climbing area. They are wearing helmets and climbing gear, and two climbing ropes dangle from the top of the frame down to the resting area. The rock includes swirling and colored patterns ranging from dark gray to rust to light cream. Large group of climbers gathered at a large boulder the size of a giant boulder. Two people are actively bouldering on the giant boulder, while other people are sitting or standing on nearby small boulders the size of medium boulders. In the "Catslab" climbing area.
February 9, 2026 at 2:18 AM
pyxorium.com
Juniper tree at North Table Mountain
February 2009
Flat top mesa of North Table Mountain in Golden, Colorado. Patches of dry grass growing on reddish-brown volcanic rock soil, along with a few yucca plants and a single solitary juniper tree (Juniperus scopulorum). The lower foliage of the juniper is absent (possibly consumed by local deer population) leaving the tree to resemble a cake pop. Mostly cloudless blue sky above.
February 8, 2026 at 3:21 PM
pyxorium.com
Warm and windy at the Westy Winter Waggle this am 🏃‍♂️
Start and finish area of the Westy Winter Waggle 5k and 10k race in Westminster, Colorado. Trail bridge in foreground that crosses over Big Dry Creek, bare deciduous trees and conifers in the middle ground along with some event canopy tents and people milling about, The Westin Westminster hotel building on the horizon, blue sky above with some large white and gray clouds. People and one dog running along the Big Dry Creek trail at the Westy Winter Waggle, dry grass and rubber rabbitbrush growing alongside the trail, a few deciduous trees in the middle ground, foothills on the horizon. Blue sky above with a few white clouds.
February 7, 2026 at 8:38 PM
pyxorium.com
Arapahoe Basin
Summit County, CO
February 2012
High country mountain winter scene. View from the top of the Lenawee Express chair lift at Arapahoe Basin ski area, looking down the Norway Face ski run toward the North Fork Snake River Valley and U.S. Highway 6 below as it winds its way up toward Loveland Pass. The mountainsides are covered in snow, with conifer forests below the timberline. A portion of wood snow fence is on the left side of the frame, the Lenawee Express chair lift is on the right side of the frame. The top of the Pallavacini ("Pali") chair lift is visible on the left side of the middle ground. The ski runs are busy with many skiers. Clear blue sky above. Arapahoe Basin, Summit County, Colorado
February 7, 2026 at 2:14 PM
pyxorium.com
Beautiful day for a walk in Clear Creek Canyon, on the Peaks to Plains Trail west of Golden, CO
View from the Gateway Trailhead toward Clear Creek Canyon. Metal staircase leads down to the Peaks to Plains Trail which follows Clear Creek. Bare deciduous trees line the banks of the creek. Blue sky above. Near Golden, Colorado. View of an icy Clear Creek looking upstream, along the Peaks to Plains Trail through Clear Creek Canyon. Blue sky above. Near Golden, Colorado.
February 6, 2026 at 10:50 PM
pyxorium.com
Loblolly pine tree at the Houston Arboretum and Nature Center
Houston, Texas
February 2014
View looking upward from bottom of pine tree toward the topmost branches (Loblolly pine tree; Pinus taeda). Clear blue sky above.
February 6, 2026 at 6:07 PM
pyxorium.com
One month to the day since last ride, felt good to be on the road again 🚲
Wildcat Point this am
Curvy mountain road, with metal guard rail along right side, steep rock face along left side, significant portions in the shade. Person on bicycle. A few conifers, including Ponderosa pine and Douglas fir, are growing near the road. Foothills in middle ground, Continental Divide in far distance, blue sky above with a few small wispy white clouds. Lariat Loop Scenic Byway in Jefferson County, Colorado, near Lookout Mountain at Golden.
February 5, 2026 at 8:17 PM
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Yucca at Addenbrooke Park
Lakewood, CO
February 2024
Yucca rostrata plant (beaked yucca) in park landscape bed. River rock fills much of the surface of the bed, which is also covered in patches of snow. The yucca is accompanied by one large rock and a few other shrubs and plants. A row of blue spruce trees appears in the distance, along with a large bare deciduous tree (possibly Cottonwood) on the left horizon, and one small marcescent leafed deciduous tree (possibly Oak) on the right horizon. Blue sky above, with a few puffy white and gray clouds. Addenbrooke Park in Lakewood, Colorado
February 5, 2026 at 2:50 PM
pyxorium.com
Great weather out on the Fairmount Trail today 🏃‍♂️. Also took a swing through the mulch pile area at Long Lake Regional Park for some aromatherapy with the recently shredded pine, spruce, fir, and juniper trees - amazing!
Dirt trail extending from lower left side of frame to the right middle ground, empty water channel running alongside left side of the trail, dry grass areas throughout the foreground and middle ground. Foothills in the distance. Blue sky above with faint white wispy clouds. Fairmount Trail in Arvada, Colorado Yellow John Deere Model 544E Wheel Loader parked next to a large pile of chipped wood mulch. Foothills in the distance. Long Lake Regional Park in Arvada, Colorado.
February 4, 2026 at 7:39 PM
pyxorium.com
Clear Creek
near Georgetown, CO
February 1995
Winter scene. Waters of Clear Creek flowing downstream, from a vanishing point in the middle ground to fill the entire frame in the foreground. A few rocks and boulders are strewn about the creek bed, each capped in a small pillow of fresh snow, which also coats the rocky banks on the left and right sides of the stream. A horizontal strip of forest extends across the upper middle ground, and includes conifers and bare deciduous trees. Ridgelines of high elevation mountains appear toward the upper right of the frame, covered in snow. Light clear blue sky above. Near Georgetown, Colorado
February 4, 2026 at 4:25 PM
pyxorium.com
Walking at Long Lake Regional Park this evening, stopped by the ballfields to see what was going on.
Night scene. Baseball field viewed from behind chain link fence backstop. Dry grass area in foreground, angled concrete walkway wraps around the backstop, with two small audience risers on the right and left sides sit behind the backstop. The ballfield is partially illuminated by overhead lights which are not in the frame. Suburban residential lights faintly visible on the horizon. Black sky above with a light cloud haze.
February 4, 2026 at 5:12 AM
pyxorium.com
Early morning hike on the Purisima Creek Trail
San Mateo County, California
February 2010
Silhouettes of conifer trees and groundcover on slope of a mountainside, against a misty blue background. At the Purisima Creek Redwoods Open Space Preserve located in the Santa Cruz Mountains.
February 3, 2026 at 2:35 PM
pyxorium.com
Walk this evening at Long Lake Regional Park ⚽
Night scene. Rows of soccer goal posts lined up at the soccer fields. Netting and pole supports illuminated by a full moon which is not in the image. Silhouette ridgeline of foothills at lower edge of frame. Starry indigo sky above fading to black. At Long Lake Regional Park in Arvada, Colorado.
February 3, 2026 at 5:11 AM
pyxorium.com
‘Stormy Monday’
Imagine at Quixote's True Blue, Denver, CO (October 2, 2011)

Melvin Seals - B3 Hammond
Ray White - Vocals/Guitar
Jamie Mitchell - Guitar/Vocals
Arnie Green - Vocals/Guitar
Garrett Sayers - Bass
Dave Watts - Drums
Kim Dawson – Vocals
02 Stormy Monday - pyxorium.com
pyxorium.com • Imagine at Quixote's True Blue 2011-10-02
plyr.fm
February 2, 2026 at 5:27 PM
pyxorium.com
A few more from yesterday's group run in Boulder #abolishICE
People running along sidewalk in protest against ICE People running and biking in street to protest against ICE, in Boulder, Colorado People running on sidewalk near the Boulder Theater to protest against ICE People running on sidewalk to protest against ICE
February 2, 2026 at 3:47 PM
pyxorium.com
near Evergreen, CO
February 2014
Pine tree foliage in the foreground, low elevation clouds in middle ground, mountain ridgelines appear as sky islands on the horizon, blue sky above with heavy white and gray clouds.
February 2, 2026 at 3:38 PM
pyxorium.com
Boulder group run this am 🏃‍♂️. In solidarity for those unjustly killed by ICE.
Woman speaking into bullhorn to a crowd of people, at the corner of Broadway and Maxwell in Boulder, Colorado. People running on street and sidewalks through residential neighborhood, in protest of inhumane ICE activity. People running near the University Bicycles bike shop in Boulder, Colorado. People gathered on grass lawn of Greenleaf Park at the finish of the anti-ICE group run. A few deciduous trees are in the background, with the Boulder Flatirons rock formations in the distance. Blue sky above with a large white cloud.
February 1, 2026 at 7:26 PM
pyxorium.com
🐇🐇
City street night scene. Sidewalk extending horizontally across bottom of frame. Painted mural on wall, the image includes two rabbits sitting in a field of flowers, the skyline of Denver, Colorado is in the background. Two lamps mounted on the wall illuminate the painting. A neon sign for the Bruz Beers taproom is on the very left side of the frame. Mural located at the corner of York and Colfax in Denver, CO.
February 1, 2026 at 2:31 PM