Garmin MapSource TOPO! US 24k West Topographic Coverage for California and Nevada (microSD/SD Card) Provides detailed digital topographic maps, comparable to 1:24,000 scale USGS maps, for California and Nevada Contains detailed hydrographic features, including, coastlines, lake and river shorelines, wetlands and perennial Provides elevation profile on compatible Garmin devices so you can estimate terrain difficult Contains many routable trails, rural roads, city neighborhood roads, major highways and interstates Displays national, state and local parks, forests, conservation areas, wilderness ares, Bureau of Land Management information