<p>This Architectural Drawing is AutoCAD 2d drawing of OPEN ELEVATION Details in AutoCAD, dwg file. Open-Elevation (open-elevation.com) is <strong>a free and open-source alternative to the Google Elevation API and similar offerings</strong>. The code is fully open-source, licensed under the GPLv2. It offers a free public API which is based on the SRTM dataset.</p>