PMTiles terrain tiles from dem1a by Geospatial Information Authority of Japan
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README
dem1a: PMTiles terrain tiles from dem1a by Geospatial Information Authority of Japan
Demo
https://observablehq.com/d/c0a3f48cf7111cd2
Source
基盤地図情報（数値標高モデル）１ｍメッシュ（標高）
測量法に基づく国土地理院長承認（使用）R 6JHs 133