Mark nodded, knowing that Carl was right. They had to leave this frozen hell as soon as possible and return to civilization. He stood up and began to pack up the camp.
They continued along the edge of the ice valley, the sun shining on the ice, reflecting a dazzling light. Mark felt a little warm, but the uneasiness deep in his heart still existed. From time to time, he looked back at the ice cave, full of doubts.
They walked for a long time until they saw an ice forest. The icicles in the ice forest were of various shapes, some like towers, some like swords, and some like animals. The sun shone through the icicles, reflecting colorful light, which was breathtakingly beautiful.
Mark and Carl walked through the ice forest carefully, and their footsteps made a creaking sound on the ice. The ice forest was quiet, with only the sound of the wind and the low hum of the icicles.
Suddenly, they heard a strange sound, like the cry of some animal. Mark stopped and listened. "Did you hear it?" he asked Carl.
Carl nodded, and his face became solemn. "It sounds like the cry of the Ice Abyss Beast. We must be careful, these creatures are very dangerous."
They slowed down and walked carefully through the ice forest. The sound was getting closer and closer, and Mark's heartbeat was getting faster and faster. He knew that they might be heading towards an unknown danger.
Finally, they passed through the ice forest and came to an open ice field. There was a huge crack on the ice field, and white mist was coming out of the crack, as if it was the entrance to another world.
Mark and Carl stood on the edge of the crack, and they saw a huge ice cave in the crack. The cry of the Ice Abyss Beast came from the ice cave, and the sound echoed in the cave, making people feel chilled.
"We must go down." Carl said, "The Ice Abyss Beast may be below, we have to be careful."
Mark nodded, his heart was full of fear, but he knew that they had no other choice. They had to face these creatures and find a way out of the frozen hell.
They began to climb down along the edge of the crack. The ice surface was very slippery, and they had to be extra careful. Mark's fingers tightly grasped the ice surface, and his heartbeat roared in his ears.
They went down into the ice cave, which was very cold and filled the air with a musty smell. Water dripped from the walls of the ice cave, and a thin layer of ice covered the ground.
They walked carefully through the ice cave, and the cry of the ice beasts echoed in the cave, making people feel uneasy. Mark held the survival knife tightly in his hand, knowing that they might encounter these creatures at any time.
They walked for a long time until they saw a huge ice room. There was a huge ice sculpture in the ice room, which was shaped like a huge eye, staring at the sky.
Mark and Carl approached the ice sculpture, and they saw that there were complex patterns on the surface of the ice sculpture, which seemed to tell an ancient story.
"This may be the energy source we are looking for." Carl said, "We must be careful, there may be a trap here."
They began to carefully examine the ice sculpture, hoping to find some clues. Suddenly, the surface of the ice sculpture began to glow, and a light shot out from the ice sculpture, illuminating the entire ice room.
In the light, an image gradually appeared. It was an ancient city where humans and ice beasts lived. They lived in harmony and guarded a huge energy source together.
Mark was shocked, and he realized that this energy source might be the key to controlling the Ice Abyss Beast. He reached out and touched the ice sculpture, and suddenly, the surface of the ice sculpture began to glow, and a powerful energy instantly poured into his body.
He felt that his body was full of power, as if he could control everything. At the same time, the ice cave began to vibrate, and the cry of the Ice Abyss Beast echoed in the cave, as if they were warning something.
"We have to get out of here!" Carl shouted, "The ice cave is going to collapse!"
They turned and ran out, and the ice cave collapsed behind them, and ice and snow fell from their heads. Mark and Carl shuttled through the ice cave, avoiding the falling ice.
They finally escaped from the ice cave and returned to the ice field. The ice cave collapsed completely behind them, and the cry of the Ice Abyss Beast echoed in the cave, but they did not chase out.
Mark panted and stopped on the ice field. His hands kept shaking.