Description: The image depicts what we call Rubins vase or Rubin face or figureground vaseWhen two fields have a common border and one is seen as figure and the other as groundfrom wikipedia Rubinvase
By: yamachem
Date: 2017-04-01
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Filesize: 2936
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Rubins Vase sourced from Openclipart is licensed under CC0 1.0
* Note: Date might not match original source and might be an educated guess.