In what the agency hopes will spur a major leap in American geoscience, the U.S. Geological Survey has released a new mapping tool that allows anyone to peer into the earth beneath their feet. Dubbed ...
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USGS Releases Free Topographical Maps For Hikers
Going for a hike this fall? The U.S. Geological Survey has free maps that might come in handy. The public topoBuilder app is now offering custom maps made free with their 25K Recreational Topo layer.
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