NA5JDD25 alone, zpool import, pool metadata is corrupted

gpes3e-gjp4:~ gjp22$ sudo zpool import
Password:
  pool: tall
    id: 11005033736436061818
 state: FAULTED
status: The pool metadata is corrupted.
action: The pool cannot be imported due to damaged devices or data.
	The pool may be active on another system, but can be imported using
	the '-f' flag.
config:

	tall                                         FAULTED  corrupted data
	  GPTE_99056308-F5E2-4314-852C-4DA04732A2D0  ONLINE
gpes3e-gjp4:~ gjp22$ date ; sudo zpool import
Thu 10 Jul 2014 07:16:34 BST
  pool: tall
    id: 11005033736436061818
 state: FAULTED
status: The pool metadata is corrupted.
action: The pool cannot be imported due to damaged devices or data.
	The pool may be active on another system, but can be imported using
	the '-f' flag.
config:

	tall                                         FAULTED  corrupted data
	  GPTE_99056308-F5E2-4314-852C-4DA04732A2D0  ONLINE
gpes3e-gjp4:~ gjp22$