Of course, the origin of this main cave and those small caves is all guessed by Tang Feng. But in any case, these little caves must lead to extremely deep underground.

Mars is a more amazing planet. In ancient times, Mars was almost indistinguishable from Earth. According to the research of geoscientists on Mars, geoscientists have long speculated that in the ancient period of Mars, Mars had surface water, and even the possibility of life was very high.

Just because the mass of Mars is much smaller than that of the Earth, and the southern hemisphere of Mars is likely to have suffered an extremely large meteorite impact in ancient times, which has led to the slowdown of the hydrothermal exchange between the Martian core and the mantle, which has caused the rotation of the Martian core to be slow, which has caused the regression of the Martian magnetic field, and now even to a very weak level.

Because of the loss of the protection of the planet's magnetic field from the atmosphere, the Martian atmosphere is stripped away by the solar wind under the blowing of the solar wind, so that the current Martian atmosphere density has become so thin. At the current rate, it may not take hundreds of millions of years for Mars to have no atmosphere and become like the Moon.

Because of this sudden change on Mars, the water on the surface of Mars disappeared, or it was replaced by a different form and hidden under the Martian surface. Similarly, carbon dioxide in the Martian atmosphere has changed its form and is hidden deep in the Martian rocks, resulting in a shortage of total carbon dioxide in the Martian atmosphere, which is why the average Martian temperature is getting lower and lower.

In any case, the biosphere of a planet is balanced, and as long as there is one accident, then there is a great possibility of causing the destruction of the entire planet's biosphere.

Mars is a prime example.

Therefore, when the ecological environment on the surface of Mars has undergone devastating changes, it is also very likely that the life that originally lived on the surface of Mars will be transferred from the surface of Mars to the underground of Mars.

And this volcanic gas eruption channel formed in ancient times is very likely to be a channel for Martian life living in this area to move underground to survive.

Of course, this Martian life may just be some plants, or even some fungi and algae, but in any case, it is precisely because these lives have moved underground to survive that a certain amount of methane gas will be formed underground, and then whenever the surface temperature of Mars rises to a certain point, these methane gases will be ejected from these caves due to changes in pressure.

That's why geoscientists have shown great interest in the seven caves near the Alcia volcano after observing them. According to the speculation of those scientists, there may really be life in the depths of these caves.

It's just that Tang Feng doesn't care about these things, Tang Feng cares about whether this place can be used as a forward base.

After going around this underground cave with a diameter of more than 200 meters, Tang Feng was pleased to find that this main cave was used to build an advance base, and the effect was definitely better than building an advance base outside.

First of all, the temperature here is almost constant, around thirteen degrees Celsius. In this way, there is no need to consider the test of the Martian night and the low temperature of the cold season on the forward base. Moreover, the constant temperature can also allow the forward base to save a lot of energy consumed by the air conditioning system.

Secondly, according to Tang Feng's observation, this cave should not be attacked by a super sandstorm, because it is more than a hundred meters underground, and even a super sandstorm will not affect the power here. In this way, it is undoubtedly much safer to set up the forward base here. Because even Tang Feng does not dare to guarantee that the forward base can resist the wind speed of up to 180 m/s of the super sandstorm.

Another point is that if this place is renovated, those small caves are completely sealed, and then the entrance of the main cave is sealed, then as long as enough oxygen is produced here and the air pressure is increased, then humans can even survive here without wearing spacesuits. However, in order to do this, it is certainly not enough to rely on these resources carried on board the "Prince Barnett".

However, since there is the first landing on Mars, there will be a second, a third, and many times, so this base will eventually be built.

Suffice it to say that this place is excellent in every way except that it is a bit inconvenient to get in and out of the place.

Even if the star core splits control the entire Mars, it is nothing more than to open up a space in the body of a certain mountain for human beings to build a survival base. However, for now, the supplies carried by the "Prince Barnett" should be better than the forward base previously envisioned if the forward base were to be built from here.

Designed by the designers of Star Discovery, the walls and roof of the base are double-layered to withstand the cold temperatures of the Martian cold season and the Martian night. But even with the latest insulation, the huge temperature difference between day and night on Mars can cause great damage to the building materials.

If the base is built in this underground cave with a nearly constant temperature, the damage to the building materials caused by the violent temperature difference can be eliminated first, and the life of the advancing base can be greatly improved. Secondly, because this forward base is built underground at a suitable temperature, then the base does not need to adopt a double-layer construction process at all, only one layer is needed, and the saved layer of building materials can double the area of this forward base.

This is the equivalent of carrying materials to build 500 square meters, but you can build an area of 1,000 square meters. It's definitely a really great choice.

The most important thing is that the largest of the small caves on the rock wall of this main cave is only the size of a basin, and the number is only more than a hundred. If you plug the leak, you don't have to plug it all. After all, this main cave is so big, as long as you build an advance base in a corner, as long as you block all the small caves in this corner, then basically there will be no problem.

Perhaps, after all the forward bases are built, the star core split will be able to completely control Mars. When the time comes, it's a big deal to remotely command the star core split on the earth and block all the remaining small caves, so that this main cave is really foolproof.

As for studying the methane gas and even the depths of the small caves, aren't there still six caves? Although I haven't been to the six caves yet, I guess the situation is similar to this cave. Enough is enough to have those six caves as spare research objects! (To be continued.) )