GeoElevationData
GeoElevationData[] gives the elevation above sea level at $GeoLocation.
GeoElevationData[loc] gives the elevation at the geographic location loc.
GeoElevationData[{loc1,loc2}] gives an array of elevation values within the bounding box given by {loc1,loc2}.
GeoElevationData[GeoPosition[{{lat1,lon1},{lat2,lon2},…}]] gives the list of elevations at the positions {lati,loni}.
GeoElevationData[loc,etype] gives the elevation of type etype for the location loc.
GeoElevationData[loc,etype,format] gives the elevation in the specified format.
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