Where is metamorphic rock found in the rock cycle?

The rock cycle diagram shows the processes that transform one type of rock into another. Metamorphic rocks are formed from pre-existing rocks (either igneous, sedimentary, or other metamorphic rocks) that are subjected to high temperatures and pressures, which cause physical and chemical changes. Point B in the diagram represents the process where rocks undergo heat and pressure to form metamorphic rocks. This transformation does not involve melting; instead, it involves recrystallization and the realignment of minerals within the rock.

References

Integrated Physical Sciences: The rock cycle and metamorphic rock formation.

Processes of heat and pressure in the formation of metamorphic rocks.