Volcano Puzzle - Wooden Brain Teaser!

A brilliant brain teasing puzzle, can you 'simply' remove the lava from the volcano?

This simple yet complex puzzle features a small 5cm wooden volcano with red lava inside. Place the puzzle on a flat surface and the challenge begins. Can you work out how to remove the red lava without moving or touching the surrounding volcano? The solution can only be found online, so there's no sneaking a look at the answer. Suits any age from 6 to 600...don't let it explode your brain!