By definition, a “coffer” is a sunken panel in a ceiling.
The inside of the inner domes, main dome and Lord Nrsimhadeva’s, will have a coffered ceiling. Below we can see a full size prototype of the ceiling segment.
The segments will be made of ALLOY, which is a very light mixture of metals. This is the first prototype. It is 22.9 feet (7M) long, 9.8 feet (3M) wide and 1.9 feet(0.6M) tall. It is the smallest segment, the biggest will be more than double this size!
The segments are made very big because from a distance they will have a much smaller appearance.