show zfs snapshot properties

Hello,

I once made a snapshot:

# ls -l

-rw-r--r--   1 root     root     3951543392 Jun 19 16:56 sungrid03.snap1

# file sungrid03.snap1

sungrid03.snap1:        ZFS snapshot stream

and I need this file for a restore.

Is there a way so see the properties of this snapshot, because during the restore I need them.

# zpool set bootfs=rpool/ROOT/tank tank

cannot set property for 'tank' : 'rpool/ROOT/tank' is an invalid name

# zpool set bootfs=rpool/ROOT/tank rpool

cannot open 'rpool': no such pool

# zpool set bootfs=rpool/ROOT/s10u9 tank

cannot set property for 'tank' : 'rpool/ROOT/s10u9' is an invalid name