Volcano Dinosaur Growing Toys is a magic kits for children to learn science! Fill with water to create lava foam,after several hours,the Volcano disappear,Exchange for fresh water and the dinosaur will come out,After 72 hours the dinosaur will be fully grown.

Volcano knowledge:

 volcano is an opening, or rupture, in a planet's surface or crust, which allows hot, molten rock, ash, and gases to escape from below the surface. Volcanic activity involving the extrusion of rock tends to form mountains or features like mountains over a period of time.