Lava rock, or volcanic rock, is made from the molten lava that volcanoes emit. Available in red or black, it tends to weigh less than many other landscaping stones. Thanks to its porosity ...

While studying the landscape of Oregon’s Cascade Range ... a layer of water-saturated rock or sediment—beneath volcanic rocks at the crest of the central Oregon Cascades.

Millions of years ago, our early ancestors roamed an area of Africa known as the Cradle of Mankind, scouring the landscape in ...

Rocks hurtled through the ... Lassen's eruption was the most recent volcanic explosion in the lower 48 states. Ecologists now study Lassen's landscape to see what the future may bring to the ...

Within Oregon, the High Cascades, whose volcanic rocks date back 8 million years ... "We initially set out to better understand how the Cascade landscape has evolved over time, and how water ...

Join Isla and Connor as they explore igneous rock landscape features at Traprain ... ISLA: Yes, because it’s a volcanic plug. A plug forms when molten lava and hot ash gets stuck as an upright ...