A spot file extension is related to the SPOT satellite image file format.
SPOT file extension - SPOT satellite image
What is spot file? How to open spot files?
File type specification:
The spot file extension is used for some sort of SPOT satellite image format.
Seems to be obsolete file format without support from developer. No further information could be found.
This spot file type entry was marked as obsolete and no longer supported file format.
This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.