File:Hyperboloid observation tower.webp
![File:Hyperboloid observation tower.webp](https://upload.wikimedia.org/wikipedia/commons/thumb/2/2e/Hyperboloid_observation_tower.webp/501px-Hyperboloid_observation_tower.webp.png?20240616035835)
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Original file (1,350 × 1,615 pixels, file size: 218 KB, MIME type: image/webp)