The petroglyphs of Tsagaan Bulag show a historical site reminding of a large play-ground. A rock with the shape of a slide remembers of children using it to slide down thus leaving it smooth and glossy. Footprints of a toddler and shapes of a resting child can be found on the rocks.
A unique engraving symbolizes a child related creature with dimen¬sions out of character aligning with rock paintings of horses and black petroglyphs. Speculations suggest that these drawings represent creations of alien minds.