"Wow, it's so beautiful here!" Sophia said a little intoxicated. It's no wonder that Sophia has such an expression, even when Tang Feng saw the scenery here, he couldn't help but secretly exclaim in his heart, "Beautiful!" ”

The tunnel should have been very close to the ground when it arrived, so although there was very little precipitation here, the limestone at the top of the tunnel was also penetrated by the action of the water flow after millions of years of rain, which formed holes of different sizes at the top of the tunnel.

Through these holes, the strong sunlight outside can shine down without scruples, and the original black tunnel is dotted with mottled colors, and the tunnel can not see those craggy stalactites here, the rock wall of this section of the tunnel appears very flat and smooth, so the root system of some plants can spread down from above along the rock wall, and some of the roots that can be exposed to the sun for a long time have actually given birth to a piece of green leaves, in the tenacious seizure of the sun, some green leaves, and even bloomed an unknown flower, as if stubbornly announcing their existence!

It is a small miracle that you can see green and flowers in this underground tunnel. But life in nature is so magical, life is so vigorous, as long as they are given a little sunshine, they can show their most cheerful smile to the sun!

Sophia pulled out her smartphone and took a random picture of the scenery. The smartphone in her hand didn't have a signal at all, but that didn't stop the girl from taking pictures of the scenery first, and then finding a place with a signal when she went out, and then passing the photos to her friends, so that her friends could enjoy the miracle of life together.

Tang Feng looked at his watch, and unconsciously he had been walking underground for almost an hour, and he had been in the dark without sunlight for a long time, and now at first glance, Tang Feng also felt that it was time to take a break.

Greeted Sophia, who was filming everywhere, Tang Feng began to take food and water out of the backpack, in fact, in the star core space, Tang Feng also loaded a lot of things, but Tang Feng, who was guarding Sophia, didn't want to take things directly from the space, so he carried a big backpack.

However, Tang Feng didn't bring water in the backpack, the thing was too heavy, Tang Feng just made a look, in fact, when his hand was in the backpack, his consciousness had already taken out the water placed in the space. These waters are all the spring water of the raw water spring, and since she is already so familiar with Sophia, Tang Feng doesn't mind letting her taste the spring water of the raw water spring as well.

Sure enough, when Sophia drank the spring water in the mineral water bottle, she immediately said in surprise: "Why is this water so delicious?" I've never drunk such a good mineral water. Don, where did you get this mineral water? ”

Tang Feng smiled and explained, "This water was not bought, it was I found a small dark river from a small cave on the side of the El Highway yesterday before I met you, and then this water was poured from that dark river. Well, this water is good! ”

"No wonder, this natural water with no pollution is actually the best to drink." Sophia said as she drank, Tang Feng's explanation was obviously trusted by Sophia.

As for Depp and Donnie, when they saw Tang Feng taking water outside, they had already screamed "whining", and the two of them had only taken two sips of water, and the two little guys over there had already drunk all the two bottles of water that Tang Feng had poured into a stone trough into their stomachs.

The two of them each drank a bottle of water, ate some compressed biscuits, fed the two dogs, and rested for a while before continuing on their way.

The tunnel here is much easier to walk than the previous one, not only spacious, but also bright, and you don't even need a flashlight, with the sunlight from the holes at the top of the tunnel, you can see the tunnel floor clearly.

The two of them walked for more than ten minutes, and it was estimated that there was a mile after they walked out, and the tunnel returned to its previous state. However, although there was no sunlight, the tunnel in front of him was still very spacious, and when he arrived here, Chen Mo's feeling was getting stronger and stronger.

Sophia is by his side, Tang Feng has no way to let his consciousness enter the space, and now Tang Feng has not mastered the dual-purpose skill of distraction, so now Tang Feng can only rely on that feeling to find that position.

After walking forward like this for about half an hour, Sophia was a little tired from walking, and even wanted to go back, when the tunnel in front of her suddenly turned a big corner, and a faint light came from the front.

This sudden change, even Sophia, who was a little tired, couldn't help but perk up, urging Tang Feng to hurry over and take a look.

The two of them turned around the big bend that suddenly appeared, and their eyes suddenly lit up, and the dazzling sunlight shone directly in front of them without obstruction, and this tunnel ended here.

The tunnel collapsed completely, but there was a not-so-large gap at the edge of the crater, large enough for a man to get out of the gap. When Tang Feng and Sophia got out of that gap, they figured out what kind of scene this was.

Here, the top of the tunnel has been completely destroyed, to be specific, it seems that something has collapsed this section of the tunnel, and not only that, the tunnel has also formed a "sinkhole" about ten meters deep and more than ten meters in diameter.

After drilling out of that gap, he stood on the edge of this "sinkhole", and Tang Feng, who had profound knowledge of geology, immediately recognized that this "sinkhole" was not a naturally formed sinkhole, to be exact, it should be a crater! And that strong feeling points directly to the bottom of the crater!

This crater is not small, the crater is already overgrown with weeds and shrubs, and apparently this crater has been around for an unknown number of years. It's also deep in the Nullarbor Plains, and there are no roads around, so it's probably never been here. Even if someone passes by here occasionally, they can't see the gap in the tunnel when they stand on the edge of the crater, and the pit is relatively deep and there is nothing in it, so even if anyone has seen this crater, it is estimated that no one has ever come down.

"Don, is this also a sinkhole?" Sophia apparently didn't recognize the crater, which is why she asked.

Tang Feng shook his head and said: "It's not like a sinkhole, but I'm very curious about this place, I want to go down and take a look, you know that I'm a geology major, so I want to think about it when I see this special terrain." ”

Sophia smiled, sat down on the edge of the pit, and said, "If you want to go down, you should go down, I have to take a good rest, my feet hurt a little after walking such a long way." ”

"Okay, you take a rest here first, I'll go down and take a look, and I'll come up in a while!"

After Tang Feng finished speaking, he slipped down the slope of the crater. I don't know how many years this crater has been formed, and many places have been accumulated with weathered rock, so it is not very difficult to go down.

After going down to the bottom of the pit, the feeling became stronger and stronger, and Tang Feng began to look for it from the bottom of this small pit, and after a while, a stone the size of a baby's fist, and the shape and color were obviously different from other rocks appeared in Tang Feng's sight!