However, no one knows where this ice came from and how it dissipated. Some time ago, the Mayflower Federation's NASA announced that the Phoenix Mars rover, when heating soil samples on Mars, found that there was really water vapor in the soil.

The direction that the little fish is pointing to may be the location of the underground ice deposits in the surface soil of Mars.

If the location of the underground ice deposits on Mars is found, then there will be not only the historical relics of Mars that have been solidified and preserved from ancient times to the present day. Moreover, it will also reveal the composition of the ancient atmosphere of Mars, the composition of the ancient ocean of Mars, and later, the great mystery of how the Martian atmosphere disappeared and how the surface water of Mars disappeared!

In this way, we can enlighten human beings on the earth, which is almost the same as the environment of Mars, how to protect and regulate the environment of the earth! Moreover, the ice deposits on Mars can also be used as the source of daily water sources for human beings on the Martian base in the future.

If this is the case, then the base that humans will build on Mars in the future can save a large piece of space that originally belonged to the water recycling system.

Along the way, Xiao Yu'er took the lead, following behind a large number of intelligent robots that were pioneers, along the volcanic lava tunnel she identified, all the way deeper. And this lava tunnel is also living up to expectations, going wider and deeper. The amount of water vapor in the air is also increasing, and the air in the tunnel is becoming more and more humid.

These scientists are also getting more and more excited, and the increasingly humid air can fully prove that there is not only water on this Mars, but also that the reserves should not be small. It seems that there should be a water source in this lava tunnel, and it may even be flowing water.

And as the group went deeper and deeper, everyone could sense that the temperature in this lava tunnel was getting higher and higher! The temperature on the surface of Mars was as low as minus 73 degrees Celsius, the maximum temperature could reach 27 degrees Celsius, and the average temperature was minus 63 degrees Celsius.

As the group walked deeper and deeper in this volcanic lava tunnel, the temperature around them soon began to rise from more than minus 60 degrees Celsius, and grew very fast, from minus 60 degrees Celsius to minus 30 degrees Celsius within a few kilometers. After walking a few kilometers further, the temperature actually rose to more than ten degrees below zero.

And the air is becoming more and more humid, and it is not much different from some drier areas on the earth!

Further on, in this volcanic lava tunnel, there is actually frost and ice condensation. At this moment, no matter how high the cultivation is, how high the status is, or how rich the knowledge and quality are, how tenacious the heart is. I couldn't help but cheer.

Although the statement that water is the source of life, in the eyes of scientists, it is not rigorous and correct. However, water is an important element in the composition of life! Although, until now, this group has not found any signs of life on Mars. However, it is enough to be happy to find such an important element of the existence of life.

And this water also means that human beings can build a larger and permanent Martian base here and survive for a long time.

Of course, the condensation of these frost and ice is not the end of this lava tunnel. After being happy for a while, Xiao Yu'er said to Yun Lei: "We should continue to move forward! If I feel right, the water aura ahead is even stronger! Moreover, there should be flowing water!"

In fact, even if the little fish don't say it, these people can deduce that after the temperature rises to a certain level, these condensed frost and ice will naturally turn into flowing water, but they don't know that these flowing water can stay in a certain location to form lakes or rivers and other water bodies. Or it flows into some deep place in the ground, or it seeps into the soil and disappears.

This huge Martian lava tunnel is getting wider and wider, and after walking ten kilometers, its huge width is far from the moon, and the volcanic lava tunnel can be compared with the volcanic lava tunnel on the earth. The height difference between the decorative dome and the surface of the earth has reached one kilometer!

If it weren't for these top scientists, who went deep underground and saw it with their own eyes, they wouldn't have believed that there was such a huge lava tunnel under the huge Olympus volcano on Mars! After hundreds of millions of years, it had not collapsed!

Moreover, the temperature in this lava tunnel is getting higher and higher, and soon it breaks through freezing! and quickly reaches the average temperature of the earth's surface of 14.4 degrees Celsius!

At this time, the condensed frost and ice in the lava tunnel have disappeared. The walls of the lava tunnel are already covered with water droplets. Its humidity is no less than that of the underground caves on earth where underground rivers flow.

There was an uproar in the distance.

Among the group, those top scientists, as well as cultivators such as Yun Lei, had already let go of all kinds of reserve and mental nature. No longer care whether there is danger or not, and no longer care about the signals sent back by various intelligent robots, the results are already obvious. Running forward, but in a matter of moments, they were at the end of the huge lava tunnel. Here, there is a huge body of water.

Although the area of this huge body of water is not as large as that of the huge underground ocean formed by the ancient ocean in Shambala, under the Tibetan Plateau in China, according to the estimation of Yunlei, it should not be much worse.

Moreover, unlike the huge underground ocean in Shambala, under the Tibetan Plateau in China, this huge body of water, between the layers of surging, actually has a slight heat. It's not icy waters without the slightest temperature.

In an extremely cold place like Mars, it is obvious that there is a heat source in this flowing and huge body of water! Otherwise, it would have been frozen and condensed!

These world's top scientists, after measuring the temperature of the water in this underground water basin with a portable thermometer, were surprised to find that this huge body of water, and a huge underground lake. The temperature of its water body has reached 40 degrees Celsius!

And obviously, the deeper you dive into the lake, the hotter it gets!

In other words, this huge lake is actually a huge hot spring! The existence of this huge hot spring means that the core inside Mars has not completely cooled! The volcanic lava under Mars has not completely disappeared!