Aerial view of the glacial grooves on Kelleys Island next to the void in the limestone quarry adjacent to the grooves. Taken from a small engine plane by Ryan Dewey. All rights reserved.
Black and white circular logo featuring the text 'Glacial Grooves'.

Glacial Grooves as a systems trace

Photogrammetric 3D Reconstruction & Wide Context Analysis

Kelleys Island, Ohio | 2022–2025


CONTEXT

At the Kelleys Island Glacial Grooves, I developed a forensic-scale photogrammetry model that maps their full erosional trajectory, revealing fine morphological shifts across space.

By reconstructing an archive of 19th & early 20th century imagery of the surrounding area now lost to quarrying, I connect this site to the broader basin-wide glacial dynamics across the Lake Erie Archipelago.

3D topographic map showing a jagged, elongated blue landform extending diagonally across the image, with elevation markers and labels on a black background. A mesh model of the glacial grooves on Kelleys Island created by Ryan Dewey.

Field Methods

I conducted a forensic-scale 3D photogrammetric reconstruction of both primary and secondary grooves, capturing topographic fidelity at sub-centimeter resolution.

Slicing the model into cross-sections at systematic intervals enabled morphological profiling along flow vectors, while a composite archive of imagery (stereoscopic images & engravings) of adjacent lost groove systems (quarried in the 19th and 20th centuries) offered a temporal counterpoint.

I am actively integrating these elements into a basin-wide erosional model extending across the Lake Erie Archipelago showing the linkage of disparate groove systems and the submerged grooves that string them together.

Mesh Model

Mesh Resolution:
Vertices: 3,829,075
Edges: 11,469,902
Faces: 7,642,396
Triangles: 7,642,830

RYANDEWEY.ORG

Systems Built

  • High-fidelity 3D mesh reconstruction of full groove system

  • Sub-meter slicing for systematic cross-sectional analysis

  • Morphological change mapping across spatial distances

  • Hypothesized inflection points of erosional process transformation

  • Historical groove site overlays for lost system recovery

  • Basin-scale erosional path integration

Insights

  • Enabled testing of how glacial force regimes evolved across variable substrates

  • Located spatial markers where erosional state-changes likely occurred

  • Re-positioned the grooves within a dynamic continuum of environmental processes

  • Recovered high-fidelity fragments of a lost morphology previously removed through industrial quarrying

  • Extended the grooves’ relevance from spectacle to signal: a trace of planetary-scale movement

Reconstructing Absent Grooves

Glacial grooves on this island once extended far beyond the 400’ site that remains today. This groove system is part of a larger formation that was lost to quarrying. My work reconstructs their original configuration using historical records, photogrammetry, and site analysis to map what is missing and understand how the broader glacial landscape was shaped, altered, and partially erased. I am continuing to process this data as part of my ongoing project archive at the Nevada Museum of Art.

Historical sepia tone stereoscopic photograph of the lost glacial grooves on Kelleys Island taken by A.C. Platt. Part of the collection of Ryan Dewey. All rights reserved.

Applications Beyond the Archive

This reconstruction offers a prototype for how we might recover, model, and operationalize landscape-scale intelligence across multiple domains.

The same forensic tools and spatial reasoning used here apply directly to:

  • ISRU planning - in analog terrain and legacy sites

  • Quarry reclamation strategy - grounded in site-specific morphology

  • Agricultural systems mapping - where annual shifts in surface structures reveal patterns of erosion, disturbance, and renewal

  • Environmental forensics - where terrain becomes evidence of past intervention or latent potential

If you're navigating complex terrain (physical, industrial, or conceptual) and need exquisite systems analysis grounded in material evidence, drop me a note:

Let's Talk

Have you seen the grooves?

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