He stands beside a massive boulder perched on a ridge, explaining how it arrived there not through violence, but through a slow, deliberate process. The rock rode in on an iceberg, likely during the waning stages of the last glaciation. As meltwater pooled and ice masses fragmented, bergs carrying enormous loads drifted across proglacial lakes and floodwaters, grounding on hillsides as water levels dropped. The final placement was almost gentle: the berg melted beneath it over months or years, lowering the boulder onto the landscape with precision no human hand could replicate.
This is what glacial erratics tell us. They mark not just the presence of ice, but the dynamics of its retreat. The floods, the lakes, the stranding events. Each one is a data point in a larger story about how quickly conditions changed and how radically the terrain was reshaped. When you see a boulder like this, sitting alone on a ridge with no parent bedrock nearby, you are looking at evidence of a world in flux.