Garmin TOPO US 100K - 1 to 100,000 Scale Topographical Mapping Software. Provides detailed digital topographic maps, comparable to 1: 100,000 scale USGS maps. Includes updated road content, by NAVTEQ (non-routable). Contains detailed hydrographic features, including coastlines, lake/river shorelines, wetlands and perennial and seasonal stream Includes searchable points of interests, such as parks, campgrounds, scenic lookouts and picnic sites. Provides elevation profile on compatible devices so you can estimate terrain difficulty. Displays national, state and local parks, forests, and wilderness areas.