Trouble mounting LVM2 drive via USB

[Noah]

HI there,

I am having issues (again) trying to mount an external LVM2 drive via 
USB.  Any assistance is appreciate in advance.

noah at nuc2:~$ cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=20.04
DISTRIB_CODENAME=focal
DISTRIB_DESCRIPTION="Ubuntu 20.04 LTS"
noah at nuc2:~$ lsblk
NAME              MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
loop0               7:0    0    97M  1 loop /snap/core/9289
loop1               7:1    0    55M  1 loop /snap/core18/1754
loop2               7:2    0  10.1M  1 loop /snap/kubectl/1545
loop3               7:3    0    55M  1 loop /snap/core18/1880
loop4               7:4    0  10.1M  1 loop /snap/kubectl/1559
loop5               7:5    0  29.8M  1 loop /snap/snapd/8140
loop6               7:6    0  96.5M  1 loop /snap/core/9436
loop7               7:7    0  71.3M  1 loop /snap/lxd/16044
loop8               7:8    0    10M  1 loop /snap/helm/256
loop10              7:10   0  30.3M  1 loop /snap/snapd/7777
loop11              7:11   0  71.3M  1 loop /snap/lxd/16100
sda                 8:0    0   1.9T  0 disk
├─sda1              8:1    0   512M  0 part /boot/efi
└─sda2              8:2    0   1.9T  0 part /
sdb                 8:16   0 931.5G  0 disk
├─sdb1              8:17   0   243M  0 part
└─sdb5              8:21   0 465.5G  0 part
   ├─pc--vg-root   253:0    0 461.7G  0 lvm
   └─pc--vg-swap_1 253:1    0   3.8G  0 lvm
noah at nuc2:~$ sudo apt-get install lvm2
Reading package lists... Done
Building dependency tree
Reading state information... Done
lvm2 is already the newest version (2.03.07-1ubuntu1).
0 upgraded, 0 newly installed, 0 to remove and 25 not upgraded.
noah at nuc2:~$ sudo mount /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.
noah at nuc2:~$ ls -l /dev/mapper/pc--vg-root
lrwxrwxrwx 1 root root 7 Jul 14 00:44 /dev/mapper/pc--vg-root -> ../dm-0