Where on Earth?? Episode 4

The members sleep without setting a tent to avoid wasting time when re-packing it. They wake up at 5 a.m., before sun raise, and march toward the stone hill. However, there is no shade to be found, and they struggle in the wasteland under the raising sun. The members manage to reach the paved road, indicating that they reach their halfway mark. They walk for 13 kilometers while continuously look for trees for shade. They finally manage to find an area with big trees where they cooked their lunch and rested. (Source: MyDramaList)