Back in stock! 📚 The Roadside Geology of Colorado (3rd ed.) is a must-have for rock lovers. With stunning photos, maps & diagrams, it unpacks Colorado’s complex bedrock geology.

Grab your copy: geosociety.co/44cVW5t
#ColoradoGeology #RoadsideGeology #Geology #ColoradoRocks

The Slumgullion Landslide: one of Colorado’s wildest sights. Formed 700 years ago, it still slides downhill at ~3m/day! Named for the colorful “slumgullion” stew miners ate. 🌄🛤️

💡 Creates Lake San Cristobal
💡 Tilted trees are the giveaway

#ColoradoGeology #SlumgullionPass #LeaveNoTrace

A high-alpine lake, known as Lake Isabelle, sits quietly in the foreground, its deep blue surface partially rimmed with the remnants of winter ice. The lake is framed by the rugged terrain of Colorado’s Indian Peaks Wilderness, part of the Front Range of the Rocky Mountains. Behind the lake rise steep, craggy peaks — most notably Shoshoni Peak to the right and the Niwot Ridge stretching to the left — their rocky faces still veined with spring snowfields that cling to north-facing slopes and glacial cirques. The surrounding slopes are a patchwork of talus, exposed bedrock, and subalpine vegetation, revealing the geological layering and forces that shaped this basin over millennia of glacial activity. In the foreground, weathered granite boulders and clusters of stunted alpine fir and spruce trees hug the lake’s edge, hinting at the harsh winds and short growing seasons typical of this elevation, just above 10,800 feet. The air is crisp and thin, the silence punctuated only by the sound of snowmelt-fed streams rushing unseen below the ice. The sky overhead is a deep, uninterrupted blue — a clear, dry Colorado day that highlights the contrast between the snow’s stark whiteness, the warm-toned granite, and the shadowed lake below. The entire scene is a study in geological drama and seasonal transition — where winter lingers well into summer, and time moves at glacial speed.

This is Lake Isabelle; still clinging to its glacial roots. Those are the Niwot Ridge and Shoshoni Peak showing off some textbook cirques and snowpack. Yes, this was taken last June. No, the ice didn't care it was summer. #IndianPeaks #ColoradoGeology #GlacialDrama

High in the Colorado Rockies at 10,152 feet, Leadville's rich mining history tells a tale of silver, gold & zinc deposited by ancient hydrothermal activity. Today's trails reveal glittering remnants of this geological treasure trove 🏔️💰

#ColoradoGeology #LeadvilleHistory

Did you know Colorado's iconic U-shaped valleys were carved by glaciers? 🏔️ Unlike V-shaped river valleys, these broad, flat-bottomed beauties were sculpted over millennia by advancing & retreating ice sheets! Spot them in Rocky Mountain NP, White River NF, and the San Juans! 🌎❄️ #ColoradoGeology