I have already deleted maps I don't need. There is only one large file left: D6017060A.img. What is this? Can it be deleted?
It's a map file of some type.
You can use the following tool to see what it is:
www.javawa.nl/jdm_en.html
Doesn't work for me, version for Mac is no longer supported.
Garmin Cycle Map EU South West (2021.10)
