In a small canyon around the highlands, there is a cave on the cliff wall about 4.5 meters in diameter, which was once one of the passageways of volcanic magma, but it has not flowed from here for more than 2 billion years.

This planet is not, as humans know, a forbidden zone for life.The extremely harsh environment and atmospheric structure of the planet's surface are indeed off-limits to life, but this is limited to the surface.

As the volcanoes filled with Mars gradually died, the magma receded, and the inner path of the volcano became the last safe haven for life on the planet.

A creature with more than two billion years of history survives on the planet and is the only large living thing on the planet.

In the cave passage where the small canyon is located, it is moving at an unpleasant speed, which is actually very slow in the eyes of human beings, it is also a failed competitor, in the competition of mating rights in another kind of male, and fortunately escaped the blood of the opponent.Now it has become an ascetic monk, he fled the deep underground lair, its whole body covered with scars, not healed, and his body is getting weaker and weaker.

After leaving the water, for the oxygen required by the body, it began to consume its own water to produce the oxygen it needed, which is undoubtedly chronic suicide, but it is also the best way to do it.

It is already a miracle to be able to come here alive, because the creatures in this population, its failure from the competition of mating rights often means that it will become a winner's meal, especially in the case of Mars, which is the most rare meal.

For this only species on Mars, it is not only the competition of mating rights, but also the contest between life and death, and the winner will perform mating with the female and get everything from the loser, including its body, and the loser will have nothing, even the body will become the winner's food, which is the cruelest competition.

It was a miracle that he could escape.

At this moment, it crawls to a steep slope, and the other end behind the top is a steep slope up to 60 degrees down, which is not a big problem for such creatures, but it is an exception, it is too much to hurt, the breath is getting weaker and weaker, waiting for it is more death, it is not safe to pass through this steep cave slope channel.

But it had to go forward, and when it crossed the top of the cave, and finally the whole body of the inadvertent body slipped like a rolling stone, and its body could curl up into a sphere to protect itself, and roll down madly in the cave.

Petzos Heights, beyond the canyon, the cavernous mouth, which rolled out of the interior, fell outside the canyon, and was also exposed to the surface of Mars.

If exposed to the sun, it will die without life.

Then suddenly he uttered a terrible cry.However, the thin atmosphere on the surface of Mars has only 1.5% of the length of the sound of Earth.

The thin atmosphere on the surface of Mars, with almost no oxygen, this species can adapt and survive, in this world known as the no-go zone of life for hundreds of millions of years, this species lives in the depths of the earth for hundreds of millions of years, there is one thing that is to it and its deadly cosmic rays.

The Pezzos region is about to enter the night, but at dusk, the sun still shines on this land, ultraviolet rays from outer space and various cosmic rays can still make it die without a place to die, the survival instinct makes it crazy to struggle, quickly to escape from this place, the opposite of the previous moribund, but it does not know that there is nowhere to escape.

Its epidermis began to burn, the naked eye visible speed began to fest, pus, muscle tissue began to turn into pus, left on its crawling path, pus touched the soil layer on the ground suddenly came out of white smoke, the trace water contained in the soil began to be severely dehydrated, thin air filled with a strong smell of acid corrosion ...

Finally, it has been exhausted, it has escaped from the competition of similar rivals, but has not escaped the final claim of death, from the cave on the cliff wall to the surface of Mars, it has tried to climb the length of 80 meters, and finally stopped, pus into the surface of the soil, and finally only left a pile of complete skeletons on the ground, white smoke pervading around it and quickly dissipated.

Along the cliff wall of the cave into the bottom of the extinct volcano, the cave from the exit to enter the first to climb a steep slope, the creature is because of this steep slope and the death, and then all the way to the ground deep, with the continuous deepening began to appear criss-crossing the cave network.

With the deepening, every inch deep close to the earth's core, a new cradle of life appeared in the underground, Mars's core in about 1700 degrees Celsius, and here always maintain a stable temperature, in the ancient era of Mars, volcanic activity is the most intense and frequent era, here is the magma, but now it is composed of water.The Earth's core of Mars, which has a temperature of 1700 degrees Celsius, has been kept at just the right distance from the Earth's habitable zone in the solar system, prompting the liquefaction of water on Earth.

There is a similar “habitable zone” in the subsurface of Mars, where water is liquid.In addition to this golden geographical location, the soil on the surface of Mars also has a water component, and if humans knew all this, it might explain the mystery of the source of water contained in the soil.

The golden geographical location allows water to be liquid here, and the underground space formed by volcanic magma or the staggered tradable lanes have also made it possible for water to converge.

This is the last habitat of life.

Deep underground in the Pezzos region, there is a huge reservoir, but definitely not the only one on the planet, and this reservoir is no less than that of Dongting Lake.Sweptlifes of reptiles congregate at a shore that are more than three times the size of the adult Komodo dragon on Earth, and they are reptiles, with more than 3,500 pieces of muscle tissue in a single individual, compared to more than 600 in humans.

This kind of creature does not move limbs, but crawls like snakes, and there is a pair that is basically not used to move more for the forelimbs used for combat, consisting of three ligament joints that can be straight but usually semi-shrinked into the "s" shape, like the mantle forelimbs on Earth.

It is inconceivable that the air here contains a higher oxygen content than the surface atmosphere of Mars, although this tiny oxygen content can not let humans breathe, but if it is discovered by humans, it is definitely a sensational world.

At this moment, these creatures on the shore are intertwined, and the body surfaces of these creatures flashing dazzling currents from time to time, and the huge current generated here can make an adult die in an instant, but there is no harm in these creatures.

Because these currents are generated from these organisms.

The water here is also the most deadly venom for humans, because the water is full of strong acidic corrosion, and the strong acidic substances present in the water are also derived from these remaining Martian organisms.

Mars does not have plants, but such organisms also have to breathe, oxygen is essential, but the planet does not have enough oxygen for them to use.

But they can make their own oxygen for life, and the trace amount of oxygen in the air comes from them.

The reason why such organisms can independently generate a strong current and acid solution is because they have evolved a unique class of organs, which produce oxygen to provide life through the process of "electrolytic water", and this kind of biologically secreted acid solution is also served for this purpose, which can increase the concentration of ions in the water, thereby enhancing the conductivity, and then speeding up the reaction rate to support the oxygen required by the body.

Billions of years of evolution have allowed this species to survive in harsh environments, but the energy expenditure required by such a huge volume is definitely not small, not to see their current swarms of "entanglements" together, if they have the opportunity, they will not hesitate to eat the same kind, completely swallowed a similarity can meet the long-term activities, the harsh living environment makes them must be cruel to survive, but only so can not let them continue to this day, eat the same kind one will one day eat one day.

This kind of remaining last Martian life means that they have no source of food, the thin oxygen on Mars can be almost ignored, and it is impossible to supply such a huge number of organisms to breathe, and their huge bodies need to consume a lot of oxygen to maintain life activities, they produce oxygen by secreting strong acid corrosion and electrolytic water, but secretion acid corrosion and providing electricity means consuming more physical functions, and it is impossible to survive without food as a supplement to the body's energy.

But even in such harsh conditions, they still have a unique set of survival skills that humans have never heard of.