Be apart from Zhengzhou 280 kilometers, have " midsummer get warm again after a cold spell of frozen, severe winter " mysterious ground! In Henan forest city, have a word wide to circulate, "39 freezing peach blossom leave, water of midsummer of the three ten-day periods of the hot season is frozen " , the one place that those who say is place is magical and natural landscape -- back glacial ice. Back glacial ice is too south travel hill paragraph a deep 100 meters artificial mining cave, altitude makes an appointment with 1500 meters. His mystical place depends on: Lukewarm gas of winter cave water is warm, summer dripping water freezes. Encounter rain, hole child on the wall is hanged everywhere full glacial approach, a the austerity that forms by humidity on hole wall is snow-white, on the knot of partial drop water on the ground a thick ice, go above a bit not careful, with respect to meeting tumble. Sorching intense heat of summer is seasonal, the ice age that is here most flower, the tourist walks into a hole inside, feel suddenly burrow comes wind, algidity is threatening. Arrived after September, ice begins to melt, form another to turn over seasonal cycle. Because the hole is on the shade slope of hill, local habit calls hill shade " back " , cry so " back glacial ice " . What reason makes it appears this kind " wintry summer convert " peculiar and geological phenomenon? In recent years, numerous expert scholar comes round to make an on-the-spot investigation, exploration, fail to make final conclusion to freezing cause of formation, glacial ice carries landscape on the back to be waited to call by tourist, media from this " the mystery of through the ages " . Through reconnaissance and experiment, can give out only such explanation: Because the lithosphere moves, the material that chemistry of two kinds of incidental absorption of heat reacts, below the hill that elbow takes in back glacial ice, the day that forms oneself begins to have chemical reaction, absorb a large number of quantity of heat, the environment that causes periphery is like a winter all the time general. Gas is burning hot that day, when be heated air goes up, consist in ice puts the cold air that carries one belt on the back on the ice, ice of have the aid of puts a back on the ice to take numerous stone to seam be issued to lower levels, in ice place glacial a hole gives an outlet, assemble become a common practice, spill over from mouth of a cave glacial ice, form the marvellous spectacle of an empty hole invites the wind-weakness lends wings to rumors. Close ice puts a back on the ice, from mouth of a cave ten when Mi Yuan, the tourist can be experienced air cooling is blown, be apart from mouth of a cave closer, wind-force is bigger and bigger, have 4 class left and right sides greatly most. The another peculiar phenomenon that this is back glacial ice -- an empty hole invites the wind-weakness lends wings to rumors. The tourist that summer will come to look around, wearing cotton-padded jacket to enter a hole in succession, the doorway still is putting a watermelon Lie.