It is a fortress.
With strong, high, adamant walls,
A deep, impassable moat, no way across.
The drawbridge is raised, the portcullis is down –
There's no way in.
In the middle of the fortress there's
A room, guarded by four soldiers.
Towering men, plumed helmets, tall shields, long swords –
And inside the room, there's what they're guarding.
Just a very small box.
It looks unimposing, but it's welded shut and padlocked three times.
Does it hold glittering treasures, plundered from a foreign land?
No. That's not why it's here.
If it's anything like treasure
It's a rare, wild animal.
It's not here so noone can take it.
It's here so it can't get out.