Answer:
The features form when magma cools beneath earths surface are Volcanic necks and Dome mountains
Explanation:
Volcanic Mountains are formed when molten rock (magma) deep within the earth, erupts, and after cooling it piles upon the surface. Similarly A volcanic plug, also called a volcanic neck or lava neck, is a volcanic object created when magma hardens within a vent on an active volcano. So these two are the features that are formed when magma cools beneath earths surface
