no .zfs directory

[montanaviking]

I created a RAIDZ2 array of 10 6TB drives
I then created a snapshot on a dataset, e.g. datatank/mysql2
the datatank/mysql2 mountpoint is /mysqldata2 as shown here
root@thor:/# zfs list
NAME USED AVAIL REFER MOUNTPOINT
datatank 1.93T 35.4T 219K none
datatank/carbonics 1.92T 35.4T 1.92T /carbonics
datatank/mysql2 5.61G 35.4T 5.61G /mysqldata2

zfs list -t snapshot

NAME USED AVAIL REFER MOUNTPOINT
datatank/carbonics@zfs-auto-snap_monthly-2022-07-06-0617 0B - 1.92T -
datatank/mysql2@now 0B - 5.61G -
datatank/phil@now 0B - 219K -

shows a snapshot in datatank/mysql2 which has mountpoint /mysqldata2
So;

cd /mysqldata2/.zfs

bash: cd: /mysqldata2/.zfs: No such file or directory

cd /mysqldata2

root@thor:/mysqldata2# cd .zfs
bash: cd: .zfs: No such file or directory
however, I can mount the above snapshot

mount -t zfs datatank/mysql2@now /mnt

cd /mnt

ls

mysql

#######################

Why is there no directory /mysqldata2/.zfs ?
Thanks in advance
Phil

[montanaviking]

It appears that when I exported and re-imported the pool (i.e. datatank for this example) then the .zfs directory with snapshots showed up.
Thanks,
Phil