What happens when two tectonic plates collide along a subduction zone?

When two tectonic plates collide along a subduction zone, one plate is forced beneath the other into the mantle, a process known as subduction. This can lead to the formation of deep ocean trenches, volcanic arcs, and intense seismic activity, including earthquakes. The descending plate melts and contributes to the formation of magma, which can rise to the surface, resulting in volcanic eruptions. Over time, this interaction can significantly reshape the Earth's crust and lead to the creation of mountain ranges.