storage emulated 0_storage/emulated/0_emulated/0/DCIM(5)

/sdcard/: According to acomment by Shywim, this is a symlink to...

/mnt/sdcard(Android < 4.0)

/storage/sdcard0(Android 4.0)

/storage/sdcard0/: As there's nolegacypendant here (see comments below), the "0" in this case rather identifies the device (card) itself. One could, eventually, connect a card reader with another SDCard via OTG, which then would become/storage/sdcard1(no proof for that, just a guess -- but I'd say a good one)

internal storage - Confused by the many locations of the virtual /sdcard/ - Android Enthusiasts Stack Exchange

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