There are many different kinds of volcanoes, ranging from the Hawaiian type, which produces gentle ... and heat to create magma from melted rock. This magma surges through the surface of the ...

Look at this wall Connor - it includes the three different types of rock ... What a view - who knew volcanoes and rocks could be so important to building a city? The Black Cuillin on the Isle ...

"The passengers are solid chunks of wall rocks that carry a wealth of details on conditions far beneath the surface of our planet over time." Kimberlite is a diamond-bearing volcanic rock ...