Spolvero por favor

For the first time, research 16 years in the making has shown the Mona Lisa has an atypical, groundbreaking planning drawing underneath. The technical term for the underdrawing is spolvero, an Italian term of art referring to a charcoal guiding sketch created by a form of stenciling. The paper went online in August and appears in the Journal of Cultural Heritage.

Read more on Popular Mechanics:

https://www.popularmechanics.com/science/a34224879/mona-lisa-underdraw-sketch/

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