Sorry I forgot the warning "HUGE files" on those maps - they are detailed.
Hiep Duc - well - trying to search fading memories - about 30+ miles SE - SSE
Google Hiep Duc - I just found a good article about the first battle I was involved in - my first day in the field - We were sent in to help the Army - I think that's where we got the nickname "Med-Evac Mike" I was one of 21 (out of an entire company) that walked out of that valley.
http://www.hodierne.com/sandssplash.htm
The article is honest but should NOT have been written as it was in the Stars & Stripes.
Thirty miles sse of, I assume, Danang. That battle would have happened before my 2nd tour. The article mentions the Americal Division (23rd ID). They were, of course, in the south of I Corps. I was flying for the 24th Army Corps HQ - the Corps Artillery CG, to be exact. Even after the hand off from III MAF to the 24th Corps, I can remember once or twice when I carried the general to the south of Danang and Marble Mountain. He always concentrated on the area north of Hue to the DMZ, and especially out near Khe Sanh where the North was hacking out more trails into the South. Arc Lights, air strikes, 175 and 155mm Howitzers couldn't stop them. Gotta respect them for that.