.BIL File Extension
File TypeESRI BIL File
File format categories include Binary, Text, XML, and Zip. The format of this file type has not been determined.
GIS file created in ESRI's BIL (binary interleaved) format, a raster image format used for representing surfaces and terrain elevations; can be georeferenced by another file to map the image data to the real world location.
BIL files can save satellite images or constructed elevation and surface data.
NOTE: BIL files are often accompanied by a .HDR file which describes the layout and formatting of the raster data.