Other
Any Latitude:facts About the Ural Mountains, Boundary Between Europe and Asia
Learn all about the Ural Mountains, the stretch of land separating Europe and Asia. Take in breathtaking pictures as you read.
Wikimedia
Wikipedia: Topaz
This encyclopedia article from Wikipedia provides a general overview of the gemstone topaz. Liinks are provided for additional information on related subjects.
Other
Mountain Professor: The Ural Mountains
Read here about the 1500-mile spread of the Ural Mountains.