{"type": "rich", "version": "1.0", "title": "Exterior lengths of Roman Amphitheaters", "description": "A \"stack\" of ovals that represent the exterior lengths of Roman amphitheaters. Made in http://blender.org with data from https://github.com/sfsheath/roman-amphitheaters . The code is here: https://gist.github.com/sfsheath/5b101260f052ee19f794 .", "url": "https://p3d.in/1yryf", "author_name": "sfsheath", "provider_name": "p3d.in", "provider_url": "https://p3d.in", "thumbnail_url": "https://p3d.in/model_data/snapshot/1yryf", "thumbnail_width": 512, "thumbnail_height": 512, "html": "<iframe src=\"https://p3d.in/e/1yryf\" width=\"640\" height=\"480\" loading=\"lazy\" frameborder=\"0\" allowfullscreen></iframe>", "width": 640, "height": 480}