Came across this website and the author went on the old Ho Chi Minh trail through Southeastern Laos and all the war remnants he found. Cool thing to look through, especially seeing parts of F-4s
Very interesting photos, history and adventure travel. Gives some idea of the scope of what went on when most were not even aware of the events at the time.
The spillover into Laos and Cambodia was kept quiet for a while, but there was a lot of activity directed into those areas.