what is lop-nur-twin fr?

Lop Nur Twin Base is a 3D digital reconstruction of a remote desert airfield near Lop Nur, China, an area some call China's Area 51. Built with TypeScript, the project turns public satellite imagery and open reporting into an explorable model you can walk, fly, or orbit around in a browser. The site sits in the Xinjiang Gobi desert and covers a 6.8 by 6.8 kilometer area. The model includes a paved runway about 5 kilometers long, two graded earth strips that form a triangle with the runway, a spur taxiway, and a compound of buildings reached from that taxiway. The project counts 43 structures in total, including hangars, an operations block, service courts, and support buildings such as a power station, water tank, and radar shelter. The creators are careful to separate what is confirmed from what is guessed. Labels on each structure mark it as observed, reported, interpreted, or illustrative, so a viewer can tell a footprint traced from satellite images apart from a building whose purpose is a guess. Two aircraft models, based on 2025 sightings reported in open sources, are parked on the flight line. A flying wing aircraft model and other moving elements like a day and night cycle, vehicles, and beacons are included to make the space feel alive, but the README states these are illustrative rather than confirmed activity. The terrain uses a seeded procedural method so the same layout generates every time, and elevation data comes from a public Copernicus dataset rather than a precise survey. The whole scene runs offline in the browser once loaded, with no live requests for imagery or weather during use. The project describes its own goal as giving people a way to move through and question a space, not to deliver conclusions about what happens there. This is a niche, research flavored project best suited to people curious about open source intelligence, geopolitics, or 3D web visualization rather than a general purpose tool. The full README is longer than what was shown.