Trouble mounting LVM2 drive via USB

[Noah]

>> noah at nuc2:~$ sudo mount /dev/mapper/pc--vg-root /media/USB
> 
> Try:
>    sudo mount -v -t auto -r /dev/mapper/pc--vg-root /media/USB
> 


sudo mount -v -t auto -r /dev/mapper/pc--vg-root /media/USB
mount: /media/USB: wrong fs type, bad option, bad superblock on 
/dev/mapper/pc--vg-root, missing codepage or helper program, or other error.


Cheers,

Noah