Lava is located inside active volcanoes and on the surface when it erupts.

Here's a breakdown:

* Inside: Lava is molten rock (magma) that exists beneath the Earth's surface within a volcano's magma chamber.

* On the surface: When a volcano erupts, magma is expelled onto the Earth's surface and becomes known as lava.

So, lava is found both inside and outside of volcanoes, depending on its state.