Puzzle #694 - Large Areas Only (Norinuri)

Nearly every Norinuri puzzle has to rely on either low numbers to fill space, or large ? numbers to fill space. At one point, I tried making one with only 10 clues, but couldn't quite finesse a solution grid. In the attempt I did find this one with only large, but not excessively large numbers, and it turned out there was a nice way to clue it, too.

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