To use map: place mouse cursor over markers to view benchmark information. Use the + and - buttons in the upper-right corner to zoom in or out. You can double-click on the map to zoom in. Clicking and holding the mouse button, and then dragging, will allow you to pan in any direction.
References to non-U.S. Department of the Interior (DOI) products do not constitute an endorsement by the DOI. By viewing the Google Maps API on this web site the user agrees to these TERMS of Service set forth by Google.