Possible Clues:

• Would sound genuine at last
• Like the sloth shown by a king of the north
• A king of the North living in forest
• Woodland pig half falling down on concrete
• Living in trees in hole between a river and a lake
• Tree-like
• Like a tree — or arable (anag)
• Airliner emptied, a line appearing under drill on a plane, say
• Lara gets up to capture bug living in a tree
• At last Greta will be alone in this truly sylvan place.