Garmin Topo U.S. 100K microSD
Here's what other sites are saying:
The Garmin Topo U.S. 100K Maps microSD data card lets you effortlessly add USGS topographic maps to your Garmin GPS receiver for any location in the country. BaseMap application allows you to view and manage waypoints routes and tracks on both your computer and GPS; includes 2D and 3D map views and elevation profiles. BaseMap features animated playback of routes and tracks, and allows you to easily organize and transfer trip data to and from your compatible device. BaseMap supports geotagging photos, enhanced printing and high resolution images. Similar in format to USGS 1:100,000 scale on topographic paper maps, the detailed features include elevation contours, trails and more. Map names correspond to USGS map names for easy referencing from guidebooks; USGS trail names are also used to facilitate planning. Points of interest incorporate thematic icons for areas such as parks, campgrounds, boat ramps and airports, making it easy to plan outings. Covers national, state and local parks, and national and state forests and wilderness areas. Features interstate freeways, major highways, rural roads, trails, city neighborhood roads, railroads, power lines and borders. Searchable database of cities, geographic names, summits, lakes and more makes locating a special spot quick and easy. Summit locations display elevation information, which is handy for calibrating altimeters. Nautical information includes radio beacons, fog signals, river, harbor and other lights, as well as shipwrecks and other submerged hazards. Topographic contours with shading enhance relief viewing; elevation profile displays on PC and certain compatible units to estimate terrain difficulty.
Now with more detail than ever, TOPO U.S. 100K covers the finer points of the outdoors, with topographic maps comparable to 1:100,000 scale USGS maps.