Looking at Nan Zhiqiao's solemn and nervous appearance, Ye Zhenzhen patted her chest and promised, "Well, everything is up to Senior Nan, let's just go in and take a walk, experience the style of the primeval forest canyon, and go back to see it, without bringing in a bit of garbage, and not taking away a single cloud." Pen %Fun %Pavilion www.biquge.info"

Ye Zhenzhen said playfully, and Nan Zhiqiao's vague worry disappeared without a trace.

The two of them followed the established route and set off towards the Grand Canyon to the north of Chaoxia Peak.

――

Although Chaoxia Peak is the northernmost part of the developed area of the forest park, the forest park only accounts for a small part of the entire northern suburbs of L City, and the undeveloped virgin forest area in the north is open.

The two walked along the mountain road from the east around the peak of Asaka, a short distance on the map, and the two walked for more than four hours.

At the bottom of the morning glow peak, the forest is luxuriant, and the fragrance of wild flowers and wild fruits fills the forest in autumn, and there is a faint mountain road in the dense forest, which seems to be walked out by mountain people, or it may be a large beast.

The two walked along the vague mountain road at the bottom of Chaoxia Peak for another distance, and the vague mountain road disappeared, and the dense forest was full of the same trees, and it was easy for people with a bad sense of direction to get lost.

Nan no Qiao took out his compass, determined the direction, and continued to walk north.

After cutting trees and breaking branches, after walking for more than an hour, the trees began to become relatively thin, and from time to time there were large bare rocks, and when they walked out of the woods, there was an open sand and gravel beach in front of them, and a small river in the middle of the sand and gravel beach appeared in front of them.

Ye Zhenzhen ran up the gravel beach, trotted two more steps, and reached the edge of the small river, the river is not deep, indifferent to the knees, the river water is clear, and schools of small fish are wandering at the bottom of the river.

"Senior Nan, the water here is very clear, it is authentic mountain spring water. Ye Zhenzhen stood by the river happily and shouted.

Nan Zhiqiao walked on the gravel beach, glanced at Ye Zhenzhen by the river, and did not say anything, but instead stared at the mountains in the upper reaches of the small river.

The upper reaches of the creek are two high mountains, the two mountains are close to each other, and in the middle is a slender gorge from which the creek meanders.

Ye Zhenzhen stared at the river, and had the urge to take off her shoes and go down to the river to tread water, but seeing that Nan Zhiqiao behind her did not respond for a long time, she turned around and saw Nan Zhiqiao looking up at the two peaks in front of her, and Ye Zhenzhen also looked over.

"Senior Nan, the two peaks in front of you look like a mountain has been split in half by a knife. Ye Zhenzhen shouted excitedly.

"Well, this is a karst landform, and the canyon in the middle should have been formed by the long-term action of flowing water. ”

"Karst landform, Senior Nan, you mean, this is a karst landform?"

"Yes, karst landforms are also called karst landforms, just now along the way, I found stone pillars and stalagmites, these are typical features of karst landforms. ”

"Oh, I also found those bare big rocks just now, and now when you say this, I remember, when I used to travel to Guangxi, Yunnan and other places, I often saw the stone forest, and the rocks here are very similar to the stones in the stone forest, and they are all because of the karst landform. ”

In addition to stone pillars and stalagmites, there are other typical landform features of karst landforms, such as sinkholes, karst caves, collapsed funnel ponds, slope valleys, and Tiansheng bridges......

Thinking of the sinkhole with a drop of more than 100 meters, Ye Zhenzhen looked around vigilantly, took two steps back, and retreated to Nan Zhiqiao's side.

Ye Zhenzhen's vigilant series of small actions attracted Nan Zhiqiao's attention, and Nan Zhiqiao also asked a little nervously: "What's the matter?"

"Not yet. Ye Zhenzhen shook her head and continued, "I just thought that there will be sinkholes in the karst landform, which is very dangerous. ”

Nan Zhiqiao smiled relaxedly, thinking, it turns out that this is the case, this Ye Zhenzhen is quite alert, "There are still obvious signs around the sinkhole, which are generally connected to the river, which can be directly located on the surface of the earth, or it may be placed at the bottom of the karst funnel, there are cracks, barrels, cones, and bags, no matter what the sinkhole is, as long as you pay careful attention, you don't have to worry about falling into it." ”

Ye Zhenzhen looked forward against the flow of the small river, and the clear river water in front of her slowly flowed out of the canyon in front of her, and then meandered into the depths of the forest along the river beach, "The area of the sinkhole is generally relatively large, there is no around, look at the direction of this small river, it flows in the direction we came over just now, but why didn't you see the river stream or anything like that in the woods just now?"

Nan Zhiqiao walked towards the river, looked at the clear water, and explained: "Sinkholes are usually distributed in a linear or ribbon along the direction of tectonic lines, fissures, and rock formations, so sinkholes are a kind of marker to judge the direction of the dark river, and the disappearance of the surface river may be from the sinkhole into the underground dark river." ”

"Oh, there are many underground rivers in the karst landscape, and the half-mountain lake in Chaoxia Peak only sees water coming from a high place, and no water flows out, and most of them also don't know from which cave mouth to merge into the underground dark river. ”

"Well, it's possible. ”

Ye Zhenzhen wanted to continue to set off in the direction of the Northern Canyon, but her stomach "growled" uncontrollably.

In the silent mountain forest, the gurgling sound was very obvious, Nan Zhiqiao turned around, Ye Zhenzhen touched her stomach embarrassedly, "Hehe, I'm a little hungry." ”

Nan Zhiqiao looked at the waterproof mechanical watch on his wrist, it was already past one o'clock in the afternoon, and the autumn sun was hanging high overhead, a little dazzling.

Nan Zhiqiao took off his backpack, put it on the gravel beach by the river, and said, "Rest for half an hour, have lunch, and then set off." ”

Ye Zhenzhen sat on the gravel beach, breathed a long sigh of relief, and sighed, "I can finally rest for a while." ”

"Are you tired?" Nan Zhiqiao opened his backpack and looked at the woman not far away.

"A little, mainly hungry, as long as you eat something to replenish your energy, you can be resurrected in no time. ”

After speaking, Ye Zhenzhen took out a bag of compressed biscuits and a bottle of mineral water from her backpack, planning to treat these two things as lunch.

"Wait a minute. Nan Zhiqiao stopped Ye Zhenzhen, and at the same time took out a small iron pot from his backpack, put it on the gravel beach, and said: "Compressed biscuits are only eaten in an emergency state, eat noodles at noon today, you go and pick up some dry firewood and come back." ”

Looking at Nan Zhiqiao's posture, he turned out to be cooking on fire.

Ye Zhenzhen rubbed her eyes, stood up, and leaned over to Nan Zhiqiao's side, "Senior Nan, do you want to make a fire to cook?"

Nan Zhiqiao took out a few more pieces of solid alcohol and two packets of dry noodles, "Well, cooking on a fire in the wild is a necessary quality for a qualified traveler." ”

Ye Zhenzhen looked at the woods by the river, there were many dead branches on the edge of the trees, and they were just right to pick them up and make a fire.

Ye Zhenzhen trotted towards the woods, and Nan Zhiqiao suddenly shouted behind her: "Don't go too far, blow the lifeguard whistle immediately when you encounter a situation." ”