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Ariane 26.2.0, published by Ariane's Line, is a specialized cave-survey application designed to turn the measurements taken during subterranean expeditions into accurate maps and 3-D models. Built for speleologists, mining engineers, and outdoor researchers, the program ingests standard underground data—distance, azimuth, inclination, wall offsets, and station notes—and immediately generates scaled passage profiles, cross-sections, and centimeter-level coordinate networks that can be exported to AutoCAD, Surfer, or GIS suites. Its integrated loop-closure engine detects survey mis-closures in real time, while the statistics module calculates error ellipsoids and uncertainty volumes so teams can decide whether to re-survey a leg before leaving the site. Beyond single tunnels, Ariane handles complex multilevel systems: users can stack surveys, reference them to national grids, and view the cave in interactive OpenGL panes that color-code by depth, date, or lithology. The software also maintains a stratified database of shots, stations, and georeferenced photographs, making it easy to revisit or extend an inventory years after the original fieldwork. Version 26.2.0 refines the Least-Squares adjustment algorithm, adds support for the new DistoX2 Bluetooth protocol, and introduces a batch import wizard that reads simultaneous data from several instruments, cutting office processing time for large expeditions. Because the same codebase is offered in two parallel editions—the stable 26.2.0 release and the legacy 2.x branch that runs on modest hardware—both professional survey companies and volunteer clubs can choose the build that matches their operating environment. Ariane is available free of charge from get.nero.com, where downloads are delivered through trusted Windows package managers such as winget, always supplying the latest build and enabling unattended batch installation alongside other applications.
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