Feature: Grand mystery in U.S. southwest desert

The photo taken on June 15, 2019 shows architecture remains in the Chaco Culture National Historical Park in New Mexico, the United States. In the arid and remote northwest corner of the southwestern U.S. state of New Mexico, lie grand architectures that represent the center of a thriving culture 1,000 years ago. Chaco Culture National Historical Park, known locally as Chaco Canyon, preserves a significant find of pre-Columbian culture that is still being studied by archeologists who are trying to solve the mysteries of its purpose and the reason for its inhospitable desert location. (Xinhua/Richard Lakin)