The world's largest construction project is carving a path through the Saudi Arabian desert, but will the 170-kilometer-long megacity known as "the Line" ever become a reality? Journalists cannot freely report from Saudi Arabia, so we analyzed satellite imagery and spoke to experts to separate the vision from reality.

Not only have the cost and the timeline for construction shifted in the sand, but recent reports suggest that thousands of migrant workers have died while trying to deliver Mohammed bin Salman's "Vision 2030."