I could see a large stone casket with a knight in armor lying on the lid.

我看见一个全副武装的骑士躺在石棺盖上。

youdao

The casket was lowered into a grave and covered with stone slabs, as wailing crowds jostled around the burial site.

BBC: Thousands of Ethiopians attend Meles Zenawi burial

Today, the shrine is a bare stone monument, with the relics of St David kept safe in a casket in the cathedral.

BBC: Pilgrims' progress for St David shrine