Learn to Use a Map and Compass A topographic map and a compass are your best friends when it comes to navigating through snowy conditions. Unlike electronic devices, they do not rely on batteries or ...

To create the new map, the ASTER instrument aboard the Terra satellite took two images every 30 metres. One picture was snapped from directly overhead, while the other was taken looking backwards ...

For maps of all 18 featured Yosemite Day Hikes, order a waterproof, tear-resistant copy of the Yosemite National Park Day Hikes Topographic Map Guide. Explore all of Nat Geo's outdoor recreation ...

It’s the sunny beaches and the Golden Gate that make it onto the postcards. But look at a topographic map of California and you’ll see that one of its defining features is the Central Valley ...

The most complete digital topographic ever made of the Earth was released by NASA today (Oct. 17). The map, known as a global digital elevation model, was created from images collected by the ...