I know this is supposed to be a tech blog and i should not post artistic stuff, but these were so great i couldn’t keep myself from posting. These are all chalk arts these are actually “2d” and drawn on the floor and are made to appear as if they are above or below the ground like the first image that appeared to be as if dug in the ground. These art works are just unbelievable. Have a look at some of them.
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Source- gprime.net