Survey of India Road Map Cropped to Ladakh. Red ink marks to depict rough location of DBO Road (near the top) and Pangong Tso (near the bottom).
Survey of India
GODL-India
<a rel="nofollow" class="external text" href="http://www.surveyofindia.gov.in/">Survey of India official website</a>, <a rel="nofollow" class="external text" href="http://www.surveyofindia.gov.in/pages/display/244-road-map-of-india">Road Map of India</a>