Mandragore/Castle of Ozgarath lake

25% of original size; click to enlarge.

Rooms	32
Loot	0 silver coins
Life	+290 food Hunt: 2 rabbits, deer, blackbird
Score	3110 exp.

Once you enter and get past the fence, the only way out is beyond the park surrounding this small castle.

Hint

There is just one item that can be taken.

Ask the "Ecorci-d'or" ("Gold-bark") for the hint.

Spoiler

Take the "Vital" ("Life tree") from the east path and lay it in the room with the human. 
First letter of stanza n.7: O.