What does a goalball court look like?

The court is 9 m by 18 m, the same size as a volleyball court. A goal spans the full 9 m back line at each end. Two high-ball lines sit 6 m from each goal line, dividing the court into thirds. Lines are taped string on the floor so players can feel them with their hands and feet.

Source: https://canadianblindsports.ca/goalball/about-the-game/