A geological expedition team discovered a rare cave in the mountains. The terrain inside the cave is very tortuous, with large caves nestled within small caves, with endless changes, as well as deep pools and cliffs, making it very dangerous. Once this incident was exposed, it attracted countless explorers, but very few returned safely after entering the cave. Those who have managed to get out of the cave have given up halfway, and no one has ever explored its end. So people named the cave "Death Valley". Gradually, fewer people came to explore. Just when the matter was about to calm down, a local farmer who had never gone to school or explored adventure went deep into the "Death Valley", found the end of the cave, and returned safely.