New road but not added to google maps yet. How to add it to the maps?

Yesterday, I drove to Leang Dai​ commune (ឃុំលាងដៃ), Leang Dai village (ភូមិលាងដៃ) in the Angkor Thom district, Siem Reap Province. When I passed and crossed the north gate of Angkor thom I saw a new road just built. But seem like not existing in google maps yet. And I have used google maps to help me navigate the destination I set, but it keep saying to me turn left turn right…because the road not existed and insist me to not going. Because I am the local here, so I know it well then I keep driving on the new road without caring of the sound instruction in google map. Finally I reach the new dam that built by the Siem Reap authority to redirect water flow out of Siem Reap town to the Baray west. And in this image is the new road built but not existing in map yet. The distance is arond 2021 m. So my questions to google or community is. How do I add this road to the maps, so it can help people to navigate and reroute the traffic at some points. Also here there are lots of attractions, people can come with family to enjoy their weekend, group gathering, group fishing or sunset meal as they like. It help to release people stress, tension after work and improve their quality of weekend. Thanks for your time to read and share. #Googlemaps #Cambodia #localguide #community #contribution