SemanticGaps → The atlas
Semantic Terrains of public institutional collections. Live terrains are free to explore, and each is a dated snapshot you can cite.
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4 terrains
Federal Aviation Administration · Safety & engineering
67,651 reports filed 1 Jan 2025 – 31 Dec 2025, gathered into 573 peaks across 22 continents. Mechanical reliability reports filed by operators and repair stations, organised by the failures and systems they describe.
U.S. Department of Justice · Enforcement
Announcements from Main Justice and the U.S. Attorneys’ offices: charges, pleas, sentences and settlements.
Tell me when it is publishedOffice of the Federal Register · Regulation
The daily journal of the U.S. government: rules, proposed rules, notices and presidential documents.
Tell me when it is publishedMicrosoft · Technical documentation
Product and platform documentation, organised by the services, tasks and concepts it covers.
Tell me when it is publishedNeed a collection we have not charted? Commission a Custom Terrain, or nominate a public collection for the atlas.
Positions are about meaning. Documents that are close together say similar things. Terrain coordinates are not latitude and longitude.
Height is how much is written. A tall peak holds many documents on one subject. It does not mean that subject is important, risky or true.
Each publication is a snapshot. Terrains are republished as their sources grow, and every snapshot is dated and citable. Peak History across snapshots arrives as terrains are republished.
