I saw a post about cave paintings on the Twitter stream, and it seems like an interesting topic.
Cave Painting: Prehistoric paintings on walls that date back to around 38,000 BC. Shows a variety of subjects, such as various animals and hand stencils.
Finger Fluting: A type of cave art created by coating a finger with moonmilk and tracing it along the walls.
Moonmilk: Limestone precipitate that's white and creamy, researchers aren't certain how exactly it's formed
Acidosis: A condition that causes increases in acid in the blood, moonmilk was a supposed cure for this, having no adverse health effects.
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