A detailed representation of a landscape, created by the United States Geological Survey, and a rare example of something every bit as beautiful as it is useful. The charts were the brainchild of ...

The USGS Topographic Map Explorer is an incredible tool allowing users to access a vast archive of maps, layer them on top of each other, and toggle the transparency for hours of productivity-killing ...

Heading outdoors with a map doesn’t just help to keep you safe – it can help you discover natural features you might otherwise have overlooked or choose the best route to a summit according to your ...

During the latter half of the twentieth century, the backbone of the U.S. Geological Survey’s national mapping effort was the 7.5-minute topographic quadrangle. These detailed printed maps defined ...