Hibernation Mandala: Burrows of hibernating animals encircled by a pattern of Z's indicating sleep., line art, no color, low detail. simple outline and shapes, for kids, for coloring book, black and white, white background, coloring book style on white background, well composed, clean coloring book page, No dither, no gradient, strong outline, No fill, No solids, vector illustration, –ar 9:11 –v 5 --v 5.2