The wall is warm. It has always been warm. It was warm before the building was built around it in 2089, when the construction crew found it standing alone on the Old Harbor waterfront — a single wall, two meters high and four meters wide, made of a stone that petrographic analysis identifies as a limestone consistent with formations in the Wisconsin Driftless Area, approximately 300 kilometers from GLMZ. There is no record of the wall being constructed. There is no foundation beneath it. It stands on the ground the way a rock stands on the ground: because it is there.

The wall maintains a constant surface temperature of 37.2 degrees Celsius — human body temperature, a coincidence that the commission does not find reassuring. The temperature does not fluctuate with ambient conditions. It does not change between seasons. During the winter of 2191, when exterior temperatures reached negative 28 Celsius, the wall was 37.2 degrees. During the heat emergency of 2196, when the Old Harbor waterfront reached 44 degrees ambient, the wall was 37.2 degrees. Infrared imaging shows uniform heat distribution across the entire surface. There is no internal heat source. There are no pipes, wires, or conduits within or behind the wall. The heat originates from the stone itself.

The building that now encloses the wall — a mixed-use commercial structure designated Old Harbor 12 — was constructed around it because early attempts to demolish the wall failed. Not because the stone is unusually hard, though it is. Because the demolition crew refused to continue. The crew chief's report, filed in 2089, states: "The wall does not want to come down." He was fined for filing a non-technical assessment. He paid the fine. He did not amend the report. The wall was incorporated into the building's interior as a feature wall in what is now a tea shop. The tea shop owner, Min-Ji Adeyemi, reports that customers touch the wall frequently. She says they find it comforting. She says it feels like being held.

The commission has no explanation for the wall's thermal properties. We have no explanation for its presence on the waterfront prior to construction. We have no explanation for why a limestone wall 300 kilometers from its geological origin maintains human body temperature with zero energy input. We are classifying it as a structural curiosity and recommending no further action, because the alternative is classifying it as something we have no vocabulary for.