Snowflake obsidian is a form of volcanic glass that features white or grayish “snowflake” shapes made of embedded cristobalite. These pretty patterns are not artificially added as a cheap ...

For the ancestral peoples of the Pacific Coast, obsidian (volcanic glass) was a highly valued raw material because it could be used to make razor-sharp cutting tools. However, for many parts of the ...

Expansive lava flows in the Sáttítla Highlands was captured by satellites ahead of the recent designation of the area as a national monument.

referring to the wealth of obsidian deposits in the area, which were formed by ancient lava flows. The dormant Medicine Lake Volcano sits in the middle of the monument and stretches over an area ...

The inhabitants were long-headed people of good stature. They made sharp, beautiful weapons out of obsidian from a nearby volcano and cultivated barley, peas and primitive kinds of wheat.

A decade earlier, Rademaker’s advisor, archaeologist Daniel Sandweiss, had made the unexpected discovery of flakes and tools made of obsidian, a volcanic rock, in excavations at one of the oldest ...

it's possible we'll discover unknown underwater volcanoes. 19:58 There are many things we don't understand, and it's a lot of work, but it's an exciting field. Approximately 60% of the world's ...