The paintings of animals, hand stencils, and other drawings were speculated to be works made by Neanderthals. The cave art reportedly spanned 25,000 years, and the Neanderthal creation of red ...

Panel 3 in Maltravieso Cave showing 3 hand stencils (centre right, centre top and top left). One has been dated to at least 66,000 years ago and must have been made by a Neanderthal (colour enhanced).

Sometimes there are moments when an engineer has to use whatever materials they have to hand in order to complete ... the badge PCB had no solder paste stencil, and the solution was to laser ...