One of the new designs in modern architecture is the Cave houses. Houses that are not inclined to be build like a normal house. It is sometimes underground and sometimes above the ground with the impression of looking like a bear's cave. The house needs proper air-conditioning or proper air ventilation especially the above the ground version. The underground version is great in insulating heat that is why with proper ventilation it would be the cool. You as a newly-employed person, wants to purchase a new house, and the market is offering you a cave house with discounts. But when you went inside the house to check it, you got locked in. There is no reception inside the house. Look for a way out by yourself.