Google back in April this year launched Mountains Layer in Google Earth. Today, the search company has made available of mountain ranges, deserts, plains and more under the "Borders and Labels" left Layers panel," informs Pete Giencke, GIS Data Engineer.
"Along with well-known landmarks such as the Appalachian Mountains, the Alps and the Sahara Desert, you'll also find some less-well-known (but just as interesting) features, including the Lut Desert in southeastern Iran (one of the hottest areas on Earth) and the Canadian Shield in central and eastern Canada (a very large area in where glaciers removed much of the topsoil starting around 4.5 billion years ago)," Giencke stated.
Lut Desert in southeastern Iran:
To view these and all the other newly-added features, make sure "Borders and Labels" box is checked in the left Layers panel in Google Earth and look for the green labels.
"Knowing that a single label may not do justice to expansive areas such as the Rocky Mountains, we've also enabled "mouseover" extents for these geographic features. By simply moving your mouse over the label you can see the full extent of larger formations or regions," Ginecke added.
Mouseover extent of the Rocky Mountains:
[Source: Lat Long blog]