Sorrowing Meadow 94% treasure ?

[Z Force Clemson]

Good evening all,

I have 94% treasure in the Sorrowing Meadow.

Yes, I have already found both of the caged friends. The map reads 100%

Yes, I have already ridden the air vent near the bottom of the map up to get the 3 keys.

What other treasure am I missing? I just ran through the whole level and was pretty sure I didn't see a treasure icon. If I missed a treasure icon, it must be one that can hold 3 treasures, as the missing 6% is almost certainly 3 chests or 3 keys. Does anybody know where else in the Sorrowing Meadow other than above the air vent that you can find 3 keys in one spot?

Thanks in advance.