They simply exist as dots on old maps — but there are a lot of old maps. Since 2011, the United States Geological Survey (USGS) has uploaded 190,000 scans of historical USGS topographic maps ...

My wife and I enjoy hiking off trail and for our bushwhacking adventures, we use a paper topographic map, a compass and a handheld GPSR.

In their study, the researchers used AI algorithms to process historical topographic maps provided by the United States Geological Survey (USGS) to identify UOWs. These maps, scanned and geotagged ...