National Geographic releases Trail Maps app

Last week, National Geographic added yet another offering to their growing list of mobile apps available for the iPhone, iPad, and iPod Touch. The newest app, entitled Trail Maps, offers a host of options for navigating both urban and wilderness environments, while also remaining useful even when you wander outside of cell service coverage.

The app uses both topographical maps from the U.S. Geological Survey and high resolution satellite imagery provided by Microsoft Bing. The software comes pre-loaded with maps of Yellowstone National Park, and surrounding areas, but you can also download highly detailed maps of just about any other place in the lower 48 States, and add them to your library. The files are quite large – about 100 MB each – but having them installed on the device allows you to use the maps even while you have no data connection.

The amount of detail on the maps is highly impressive to say the least. The app allows you to quickly, and easily, zoom in and out using typical iOS gestures, such as pinching and double tapping. When zoomed out, you get a nice overview of the region the map covers, but as you slowly zoom in, more and more details emerge, right down to topographical lines for indicating slope and elevation. You'll also find the locations of hundreds of landmarks, including campsites, rest areas, and even mountain peaks, or – in the case of Yellowstone – individual geysers. If the map you add to your device is for a city, you'll find even more points of interest.

Of course, detailed maps aren't the only thing that National Geographic brought to the table. The app also allows for live route tracking using your device's built in GPS chip. It also provides detailed reports of your treks, both urban and wilderness, charting speed, altitude change, direction, distance and so on. There are also built in tools that allow you to measure distances on the maps, place waypoints, and even navigate by compass. In short, everything you need to find your way around just about any place in the U.S.