The file is a specialized compiled shape file used by Autodesk Civil 3D and AutoCAD to define symbols, linetypes, and markers for civil engineering and land development projects. Purpose and Functionality
I ran into the "Missing SHX File" error when opening a civil drawing today. The file in question was aeccland.shx . aeccland.shx
Here are some key points about the "aeccland.shx" file: aeccland