Humans have lived in Monument Valley for thousands of years. Some still live there today. A few, mostly older, live in traditional Diné homes known as Hogans. With no running water or electricity, they continue to cling to their past and traditions. The earliest and most primitive Hogans were called "Male Hogans" while the more modern structures are "Female Hogans". The Female Hogan was the Navajo home, and played a central role in the religious and secular lives of the Diné. All Navajo ceremonies and rites are performed in Hogans. The door to a Hogan faces east towards the rising sun. The dome-shaped circular home is made of wood, packed earth and mud. Logs are placed in a roughly circular pattern, gradually stacked to create a frame. Smaller logs are then used to support the domed roof. Earth is then packed on the outside and reinforced with insulating layers of mud. There is a skylight in the center of the dome to allow sunlight and air in and smoke out. This is the Hogan of Aaron's grandfather. He lives with his daughter since he is now confined to a wheelchair.