The project is built using Shuttle Radar Topography Mission (SRTM) data. This is NASA-grade information that ensures the mountains you see in the sim match the real-world height coordinates exactly. 4. Zero Cost (Donation-ware)
For flight simmers still operating on the FSX/P3D platform, FreeMeshX is widely considered the for improving terrain visual fidelity without spending money on payware alternatives like ORBX. freemeshx global terrain mesh scenery 20 best