Igneous intrusions are a type of rock feature. They form when molten rock cools below the surface of the Earth. Join Isla and Connor as they explore igneous rock landscape features at Traprain Law ...

The object was found at Coto Correa in Las Chapas, a site that has been known since the 1950s, when archaeologists first found stone tools there dating to the early Paleolithic period. Recently, a ...

Igneous rocks — which form as magma solidifies either deep within Earth or at the surface after a volcanic eruption, for example — contain a limited number of minerals that crystallize ...