The Apse Mosaic at San Clemente: Detail, Tree of Life, stags at streams, Lamb of God

As usual, the number of streams is four, reflecting the four rivers in the Garden of Eden. The central lamb has a cruciform halo, symbolizing Christ. Twelve sheep face the Lamb, symbolizing the 12 apostles and 12 tribes of Israel.

View the entire apse.
Read more about the Lamb of God symbol.

Photographed at the church by Richard Stracke, shared under Attribution-NonCommercial-ShareAlike license.