How does the magma get above ground?

Answer 1

High pressures in the Earth’s crust pushes magma up cracks in the tectonic plates until it emerges above ground level.

Answer 2

Magma rises to the surface through volcanic conduits and pathways called dikes, fractures, and conduits. This process is driven by buoyancy and pressure from the Earth's mantle. As magma moves upward, it can eventually erupt onto the surface as lava through volcanic vents or fissures.