Regarding this illustration; As a result of the snow falling from the direction marked with the red arrow, a 4-meter snow accumulation occurred on the obstacle mound. An entrance door of 1 square meter was opened on the side of this mound facing the cedar, and a room with dimensions of 2mx3m and a ceiling height of 1 meter was created inside. Cushions were made from tree branches inside. After 2 Yuri died in the fire, 3 people went to the tent, and the other 4 people took shelter in the cave. After a while, the entrance of the cave collapsed and only 1 m2 of living space remained inside. Collapsed snow is hard snow whose statics have been disrupted, and it is not possible to open an exit hole again. The tourists knew that the other side of the mound sloped towards the valley, and that if they excavated in the opposite direction of the collapsed side, they would come out right near the valley. It was easier to dig natural snow. The 4 people panicked about being stranded and everyone started to find a way out. I assume 4 people dug a 4 meter wide tunnel under a 4 meter snowbank. After digging about 6 feet, just as they were reaching the stream, the mass collapsed again and dragged them into the stream. They were injured and stranded. Oxygen was sufficient, but hypothermia was inevitable. Can we actually say that the valley and the shelter are not independent?